Hello everybody, I'm Dejan and I could use some help please.
I have Samsung Galaxy SII GT 9100 with broken screen and I have some very important stuff in it. Screen is totally broken and I cant see a thing. Long story short i used Fuzzy Meep's app but I'm stuck deep in the mud so thats off. I booted phone in my custom recovery , installed ADB on PC and managed to connect to the device. But I can't make my way thru the sdcard. Here is what I did:
G:\ADB>adb.exe shell
~ # cd etc
cd etc
/etc # ls
ls
recovery.fstab
/etc # cat recovery.fstab
cat recovery.fstab
# Android fstab file.
#<src> <mnt_point> <type> <mnt_flags and options
> <fs_mgr_flags>
# The filesystem that contains the filesystem checker binary (typically /system) cannot
# specify MF_CHECK, and must come before any filesystems that do specify MF_CHECK
# data partition must be located at the bottom for supporting device encryption
/dev/block/mmcblk0p9 /system ext4 ro,noatime
wait
/dev/block/mmcblk0p7 /cache ext4 noatime,nosuid,nodev,j
ournal_async_commit,errors=panic wait,check_spo
/dev/block/mmcblk0p1 /efs ext4 noatime,nosuid,nodev,j
ournal_async_commit,errors=panic wait,check_spo
/dev/block/mmcblk0p10 /data ext4 noatime,nosuid,nodev,d
iscard,noauto_da_alloc,journal_async_commit,errors=panic wait,check_spo,encryptable=/efs/metadata
/dev/block/mmcblk0p12 /preload ext4 noatime,nosuid,nodev,j
ournal_async_commit wait
# vold-managed volumes ("block device" is actually a sysfs devpath)
/devices/platform/dw_mmc/mmc_host/mmc0/mmc0 auto auto defaults voldmanaged=sdcard0:
11,nonremovable,noemulatedsd
/devices/platform/s3c-sdhci.2/mmc_host/mmc1 auto auto defaults voldmanaged=sdcard1:
auto
/devices/platform/s3c_otghcd/usb auto auto defaults voldmanaged=usbdisk0
:auto
# recovery
/dev/block/mmcblk0p5 /boot emmc defaults recovery
only
/dev/block/mmcblk0p6 /recovery emmc defaults recovery
only
How do i mount internal memory and pull out my data? Any help is appreciated. Thanks
It's a CM LInaro Kitkat 4.4.2 with custom kernel. With older versions of Android I was able to do what I was attempting to do but I've read somewhere about certain change when mounting storage on 4.4.2.
Thanks in advance.
Noone? Reallu? At least some info about device reading out data directly from the storage chip?
denkodenko said:
Noone? Reallu? At least some info about device reading out data directly from the storage chip?
Click to expand...
Click to collapse
That isn't even remotely possible for an end user. The only people who might be able to do that is a company which specialises in recovery of data from dead HDDs'. If it is possible, expect it to be very very expensive. I've never seen a single person post here in 2.5 yrs saying they've had this done successfully. Even if this is was possible, fixing your screen would be cheaper.
Very few people here have attempted to do what you're doing with ADB (me included; frankly, if the data was that important to me, I'd pay $120 for a new screen to save myself hassles, but I wouldn't be in that situation to begin with because I back stuff up). Unfortunately, you're going to be in for a rather long wait if you don't manage to work this out on your own, many people who may have been able to help you don't post here anymore, they've moved onto other phones given it's been 3 yrs since this phone was released.
MistahBungle said:
That isn't even remotely possible for an end user. The only people who might be able to do that is a company which specialises in recovery of data from dead HDDs'. If it is possible, expect it to be very very expensive. I've never seen a single person post here in 2.5 yrs saying they've had this done successfully. Even if this is was possible, fixing your screen would be cheaper.
Very few people here have attempted to do what you're doing with ADB (me included; frankly, if the data was that important to me, I'd pay $120 for a new screen to save myself hassles, but I wouldn't be in that situation to begin with because I back stuff up). Unfortunately, you're going to be in for a rather long wait if you don't manage to work this out on your own, many people who may have been able to help you don't post here anymore, they've moved onto other phones given it's been 3 yrs since this phone was released.
Click to expand...
Click to collapse
Well at least I gave it a shot but yeah... you are probably right I shouldn't have bothered posting and I was pretty sure someone somewhere might have asked the exact same question unfortunately I couldn't find it. I know how annoying these questions can be and I'm very sorry if I made someone angry. Long story short - I managed to get my pictures and videos back, as well as contacts. I do back those stuff up. however I had some .bin files for work that I lost but I've been living with that. It just might take some time browsing on the Internet finding them again but I'd rather do that than trying to do anything with the phone. I bought it $100 last year, the screen alone is that much, there's no point in fixing it. And at last but not least, thanksfor the reply.
Nah, they're not annoying It's just a very unusual situation, and as I said, if you want help with that sort of stuff with this phone on here, because so many people have moved on, you need to be really patient, that's all.
Same story
Shortly broken display no touch input. I had custom KitKat rom.
I had almost given up trying to mount the internal sd card with ADB, following numerios forum post instructions
here is my solution using windows pc and ADB
I rebooted in recovery (I think it was 6,0xx)
Using command prompt (you also need adb.exe) :
adb remount
adb root
adb usb
Those 3 command somehow mounted the internal storage and I was able to use the "adb pull" comand to copy the whole internal sd card to my hard drive
After that I went with "adb shell" to check how the sd card was mounted and here is what I found:
"
/dev/block/vold/259:3 on /storage/sdcard0 type vfat (rw,dirsync,nosuid,nodev,noe
xec,relatime,uid=1023,gid=1023,fmask=0007,dmask=0007,allow_utime=0020,codepage=c
p437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro)
/dev/block/mmcblk0p11 on /emmc type vfat (rw,dirsync,relatime,uid=1023,gid=1023,
fmask=0007,dmask=0007,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortn
ame=mixed,utf8,errors=remount-ro)
"
Related
hi, i recieved a eris from a friend of mine with the intentions on fixing it and using it. when i power it on there's just a black backlit screen.. no splash, nothing. if i plug usb in it goes to a htc screen with 4 triangles in the corners. i've tried the ruu update and it gives an 110 error at the end saying something about files not found, i unhooked the usb and it went to a white screen with hboot 1.49 , n s-on n all that stuff.. and it showed info from the ruu, and it showed that the system and boot(or recovery, i cant remember exactly) failed and they were red. i can connect with fastboot but not with adb.. is there anything i can do to atleast get the phone working.. fastboot oem boot doesnt work for me, it just gives a long list of errors
fastboot will do nothing useful for you if you have the 1.49.0000 S-ON bootloader.
The basic definition of a brick for the Eris is this:
1.49.0000 S-ON bootloader + no recovery + non-booting OS = brick
So, let's review.
1) You have 1.49.0000 S-ON. There is no PB00IMG.zip available to you that can change that using Hboot (without performing some magic with a custom recovery first), and fastboot is worthless with S-ON. So, no go there.
2) You didn't mention (or your description was lacking detail) what happens when you try to go into the Hboot menu (cold start with Vol-Down+End). From there you might be able use the menu to try to launch the recovery boot, to see whether (a) it is the stock recovery, (b) it is a custom recovery, or (c) it fails to start. You should try that next.
If that doesn't work, try a cold start with Vol-Up + End. (You need to keep holding both the buttons down until the screen lights up). That is an alternate way to get to the recovery (when a 1.49.xxxx bootloader is on the phone).
If you have a "stock" recovery, you will see a splash screen with an image of the phone and a triangle with an exclamation point in it. (Pressing Vol-Up+End after you see that splash screen will show a blue menu). If you have Amon_RA's custom recovery, you will see a green menu.
3) If your kernel boots, but the OS is "hanging", there is a remote possibility that you can initiate a factory reset from the "hung" OS. This is a long shot, but you power up the phone normally and then press together Vol-Up+Send+End after waiting a couple of minutes. This might make it bootable. (As I said, "long shot". The fact that you have 1.49.0000 on the phone suggests that the prior owner tried some things - and apparently failed at it.)
bftb0
thanks for the response
i tried all of that just now and all i get is a black backlit screen unless i connect usb which gives me a black screen with HTC n four exclamation point triangles in the corners. and there isnt anything i can do from that screen and its bricked huh?
SoSicWiTiT said:
thanks for the response
i tried all of that just now and all i get is a black backlit screen unless i connect usb which gives me a black screen with HTC n four exclamation point triangles in the corners. and there isnt anything i can do from that screen and its bricked huh?
Click to expand...
Click to collapse
That's not a very good sign. I will say, however, that it is very strange that you can get the phone into RUU mode but not have a working bootloader - those two observations are mutually exclusive.
For grins, you could check to see if perhaps your Vol-Up/Vol-Down keys are broken by doing the following:
- Cold start the phone by pressing Send + End simultaneously (make sure to press Send first so that you are not initiating a normal boot; hold both keys down until the screen lights up). Make sure you pull the battery and have the USB cable disconnected when you pull the battery before you try this (to insure that the phone is "really" off).
If that works, the phone will be in Fastboot mode. You might be able to get into Hboot (but not recovery if your Vol-Up/Vol-down keys are broken) at that point with the command
Code:
fastboot reboot-bootloader
from a USB-connected PC.
Under normal circumstances, you can navigate from Fastboot Mode to Hboot and then from there to the Recovery boot - but this requires working Vol-Up or Vol-Down keys.
There is a very, very slim chance that if you can get Hboot launched this way (that is "fastboot reboot-bootloader")... and try to apply the Leak-V3 "PB00IMG.zip" file. If I recall correctly, you don't need Vol-Up/Vol-Down to apply an HTC PB00IMG.zip file - just the trackball press.
I'm not optimistic though - I think that the Leak-V3 (and all other Leak PB00IMG.zip) files probably will just fail with "Main Version is Older Messages".
As for other avenues of approach, there are no publicly known exploits of the RUU mode (= oem-78 mode).
Good luck
well
actually after staying up n working at it for 48 hours, i'm halfway done with a solution...and maybe the first ruu exploit.
i decided to run the 2.1 RUU and after it does its install wizard thing, i navigated to the temp folder where it installed all the files. i took the root rom (pb00img.zip) n renamed it to "rom.zip" then over wrote the version in the temp folder and started the ruu (clicked next and what not).. it failed as usual with error 110.. but afterward i noticed my phone says
pb00100 xc ENG S-OFF
HBOOT-1.49.2000
and before i did the file swap and ruu it said
pb00100 XC ENG S-ON
HBOOT-1.49.0000
so now i might be able to flash a custom recovery thru fastboot since i have s-off now
if not.. still.. its progress
Hmmm, interesting.
Whether or not that qualifies as new behavior sort of depends on what your "friend" did to the phone prior to getting it into the nearly bricked state. If they had previously run the jcase "Flash any RUU" method, then the Root ROM would have "taken" with the Hboot method... although in your case, since you "couldn't get there from here", my hat's off to you for a clever way of making the best of what you have!
Since you have the S-off bootloader, you might be tempted to direct-boot Amon_Ra without even bothering to flash it:
Code:
fastboot boot recovery-RA-Eris-v1.6.2.img
to see if your phone springs to life... congrats if you see a menu!
bftb0 said:
Since you have the S-off bootloader, you might be tempted to direct-boot Amon_Ra without even bothering to flash it:
Code:
fastboot boot recovery-RA-Eris-v1.6.2.img
to see if your phone springs to life... congrats if you see a menu!
Click to expand...
Click to collapse
i did that right after i seen it say "S-OFF". i get to the menu but when i try to flash a rom it gives me an error after formatting system.
Code:
E:Can't symlink /system/xbin/arp
E:Failure at line 65:
symlink /system/xbin/busybox SYS
TEM:xbin/arp
and after hours or more reading, everything is pointing to the boot and system partitions being corrupted by a bad flash of some sort.
i think i might have hit the end of the road..
EDIT
i managed to somehow get all the regular hboot, fastboot, n recovery to work and flashed amon_ra and can get to it from volup+power.. even got the 3 skateboarding droids on normal power on..
but cant flash any roms , from amon's ( gives the error above )or pb00img from hboot (at the end has "failed-PU" next to system..)
any idea's?
I have a couple ideas (still typing them up) ... in the meantime, if you boot Amon_RA and then open up a shell from the PC ("adb shell") and then
- check the output of "dmesg" to insure that the MTD partition table is still intact; you should see something like this towards the beginning of the boot log:
Code:
NAND_EBI2_ECC_BUF_CFG: 1ff
flash_id: 5501bcec size 20000000
Creating 6 MTD partitions on "msm_nand":
0x00001ff60000-0x000020000000 : "misc"
0x000002c60000-0x000003160000 : "recovery"
0x000003160000-0x0000033e0000 : "boot"
0x0000033e0000-0x00000dde0000 : "system"
0x00000dde0000-0x000015fe0000 : "cache"
0x000015fe0000-0x00001ff60000 : "userdata"
- try mounting (in turn) each of /system, /data, /sdcard, e.g.:
Code:
mount /sdcard
mount /data
mount /system
/cache should already be mounted.
Which mounts fail?
bftb0
The scenario you describe has come up before - or at least very similar symptoms.
Note that Nandroid restore will fail because it uses standard Unix tools such as "rm" to clear filesystems, so if a partition will not mount because of a corruption issue, nandroid will fail. I suppose that the same thing is true of the /sbin/recovery utility running underneath the booted recovery kernel (but I have not read the source code to verify that it is attempting to "mount" the filesystems first - if it didn't do that, it would need to understand the raw format details of yaffs2, and I think that is a stretch).
Unfortunately the filesystem formatting tools provided by Amon_RA do not include tools for repairing the mtd (NAND flash) - they are for the SD card/ extN filesystems. It is my impression, however, that the "yaffs2" filesystem is "format free" - meaning that a clean (Flash memory) "yaffs2" filesystem is simply a bunch of zero'ed pages - no superblocks, or Inode lists, - none of that. This suggests that the equivalent of "dd if=/dev/zero of=/dev/mtd/mtdNNN bs=..." could "repair" a yaffs2 file system by simply wiping it... but let's try something a little less crude than that (see below).
I had one of the file systems in my phone in this state at one time and I was able to repair the problem by reflashing the Root ROM - otoh, XDA user "stick" tried this and it seemed to produce a permanent brick in his case, so I am reluctant to recommend you do that. (You might, however, want to perform the jcase "Flash any RUU" hack to the "misc" partition so that you have flexibility to apply any PB00IMG.zip file)
Because the "flash_image" tool (in /sbin/flash_image in Amon_RA) writes both boot images and yaffs2 image files to arbitrary mtd partitions (and raw binary files to "misc"!), there is a chance that it is merely the equivalent of "dd for the MTD device" - so that you could "repair" a corrupted yaffs2 filesystem by simply overwriting it with a valid yaffs2 image file. The repair strategy here would be to:
- Unpack any PB00IMG.zip file and move the contents to a folder on the SD card. (Verify the md5sums of the files on the SD card before you use them - use this reference)
- Use "flash_image" from Amon_RA to flash the corresponding image file for the offending ("won't mount") partition, e.g.
Code:
flash_image system /sdcard/unpacked-PB00IMG/system.img
If this succeeds, see if you can "mount /system".
bftb0
PS Don't try flashing "system.img" using fastboot. However it is engineered (by the HTC bootloader) it will fail due to space issues. It is possible that the HTC bootloader uses the /cache partition to temporarily stage the file, which is only 130 MB compared to 159.5 MB for the /system partition - but whatever the explanation, the experimental result is that that on the Eris, you can not flash /system from fastboot. All the other partitions, no problem - but not the /system partition.
thanks,
i tried what you suggested and it let me mount all 3 of those partitions, and i tried using flash_image to flash the system.img i extracted and in return got a million and one errors..
starting with mtd: ECC error soft 0 hard 1 (continuing until about a hundred something)
then
mtd: not writing bad block at (basically the entire /system hex range)
then finally
error writing system: no space left on device
SoSicWiTiT said:
thanks,
i tried what you suggested and it let me mount all 3 of those partitions, and i tried using flash_image to flash the system.img i extracted and in return got a million and one errors..
starting with mtd: ECC error soft 0 hard 1 (continuing until about a hundred something)
then
mtd: not writing bad block at (basically the entire /system hex range)
then finally
error writing system: no space left on device
Click to expand...
Click to collapse
Was the partition table information correct? (I have seen innocuous "write error" messages on my phone, but they only occurred on regular block boundaries - not for every page; but in that case I don't think I ever saw an "out of space" message. Assuming everything was performed correctly, your phone is behaving as if large blocks of flash memory are being skipped due to "bad blocks")
Did you unmount the filesystems prior to doing the writes?
That is very mystifying.
If you can mount /system, or /data, what happens when you go in and do a
Code:
mount /system
cd /system
rm -rf /system/*
mount /data
cd /data
rm -rf /data/*
cd /
If those succeed, unmount everything
Code:
cd /
for x in /system /data /sdcard ; do
umount $x
done
Run an Amon_RA "wipe data/factory reset", and try and flash a ROM.
???
bftb0
One other thing you could try - I have never used it, so I don't know what effect it will have - is to use fastboot mode to erase the "system" and "data" partitions, and see if that has any effect on your ability to flash a ROM.
In fastboot (boot w/ Send+End) mode:
Code:
fastboot erase system
fastboot erase data
And then afterward boot into Amon_RA and try flashing a ROM.
I suppose you could also erase the boot partition this way, but you probably ought to do them one at a time just to minimize erase operations - and then if an operation fails in Amon_RA, examine the log file at
Code:
adb shell cat /cache/recovery/log
to see if it provides further elaboration on the nature of the error(s).
bftb0
Something else to try:
The symptoms you have (esp. since it appears that /system and /data will mount correctly) appear as if you "run out of space" when flashing ROMs to NAND. I suppose that could occur if somehow a bunch of pages in flash memory got (erroneously) marked invalid. Unless there is some means to clear flash memory so that bad page indicators are cleared, there is no way to reclaim those pages. (It is my impression that brand new NAND flash chips are already programmed with bad pages pre-marked)
It would be nice if the partition erase function of fastboot actually performed the page reclaim/retesting/re-marking operation - but there is no way to know whether that happens, as the HTC bootloader acts as the interpreter of "fastboot commands" passed over the wire (USB). It is free to implement whatever bad page management strategy that HTC desires - and frankly, a "never reclaim bad pages" policy is fairly reasonable when you consider that most consumer phones are flashed perhaps only 3 or 4 times in their lifetime - if that.
Something to try: if you perform a manual wipe of either /system or /data (after mounting them), do a "df" to see how much free space the kernel thinks they have - for a normal phone, that should be pretty darn close to the partition size. E.G.
Code:
> adb shell
# mount /system
# df /system
# mount /data
# df /data
# umount /system
# umount /data
# exit
>
If it seems "short" by a substantial amount, try installing a "small footprint" ROM, such as CELBFroyo 3.2 - it only uses about 100216 KB (97.9 MB).
Just a thought; I realize this is grasping at straws, but there is little for you to lose (which you knew right from the get-go).
bftb0
wow seriously i appreciate all the help you've provided , you need a donate button lol.
the system partition is 66% used (bad blocks im guessing) after a format leaving 59,648 useable
but the data partition is fine with 1% used. and 162,176 usable
but i havent lost all hope yet and this is entertaining me.
custom mtd maybe..swap /data to mtdblock3 (the bad one, system) and and /system to mtdblock5 (where data currently is).. or use a memory card idk?
here's where i got the idea
http://forum.xda-developers.com/showthread.php?t=717874
SoSicWiTiT said:
the system partition is 66% used (bad blocks im guessing) after a format leaving 59,648 useable
Click to expand...
Click to collapse
Holy crap!
For grins, could you do a "cat /proc/yaffs" and post up the section for the "system" partition? (You need /system to be mounted when you run that command).
Here's what mine looks like after performing an erase with fastboot, booting into Amon_RA, and then mounting it:
Code:
Device 1 "system"
startBlock......... 0
endBlock........... 1359
totalBytesPerChunk. 2048
nDataBytesPerChunk. 2048
chunkGroupBits..... 0
chunkGroupSize..... 1
nErasedBlocks...... 1359
nReservedBlocks.... 5
blocksInCheckpoint. 0
nTnodesCreated..... 0
nFreeTnodes........ 0
nObjectsCreated.... 200
nFreeObjects....... 96
nFreeChunks........ 86976
nPageWrites........ 0
nPageReads......... 0
nBlockErasures..... 0
nGCCopies.......... 0
garbageCollections. 0
passiveGCs......... 0
nRetriedWrites..... 0
nShortOpCaches..... 10
nRetireBlocks...... 0
eccFixed........... 0
eccUnfixed......... 0
tagsEccFixed....... 0
tagsEccUnfixed..... 0
cacheHits.......... 0
nDeletedFiles...... 0
nUnlinkedFiles..... 0
nBackgroudDeletions 0
useNANDECC......... 1
isYaffs2........... 1
inbandTags......... 0
I wonder what your "nRetireBlocks" count is.
I only poked around in the HTC "msm_7k" kernel code a little while ago for some clues, so I'm no expert. There does not seem to be any useful knobs to turn by using mount options.
Because Flash filesystems have to deal with new bad pages as they develop, I'll bet the phone could be completely fixed if there was a way to clear the bad pages - ( if they were actually bad, then on the first write use the write would fail, the pages would be marked bad, and the FS driver would recover gracefully - just as normally happens).
But as you say, that would probably require a custom kernel at the minimum with patches to the mtd driver. I do wonder if the kernel driver for the MTD device exposes any hooks (ioctls, etc) that would let you write a (privileged) userspace app which could wipe the raw pages status info.
This YAFFs doc suggests that certain tuning operations can be performed by writing options to /proc/yaffs, including control of tracing. One of the things that seems possible to control is the number of write attempts per page.
I'll have a look at your URL; no promises, though.
bftb0
[ Edit ] PS - do you have any idea what your friend did to get the phone in this state? Maybe flashing a ROM with really, really low battery? It seems hard to believe that an actual hardware problem occurred - moreover, this is not the first phone where very similar symptoms were exhibited.
I'm wondering if a busybox with mtd-utils compiled in might be of some assistance; in particular the "flash_eraseall" tool. (Perhaps use it with the "-N" option?)
lookit recent versions of the "flash_erase.c" code (excerpted from above Git link):
Code:
static void display_help (void)
{
printf("Usage: %s [options] MTD_DEVICE <start block> <block count>\n"
"Erase blocks of the specified MTD device.\n"
"Specify a count of 0 to erase to end of device.\n"
"\n"
" -j, --jffs2 format the device for jffs2\n"
[COLOR=green][B] " -N, --noskipbad don't skip bad blocks\n"[/B][/COLOR]
" -u, --unlock unlock sectors before erasing\n"
" -q, --quiet display progress messages\n"
" --silent same as --quiet\n"
" --help display this help and exit\n"
" --version output version information and exit\n",
PROGRAM_NAME);
}
(I don't have that version of busybox - I see references made to it in a few posts here on XDA, but I don't know it's origin or where to get it)
bftb0
[ Edit ] looked around for a bit and couldn't find anything pre-built; looks like you might have to build mtd-utils using the NDK for Android. Time for bed for me; here's the link to the mtd-utils project.
i found out that my friend installed rom manager n clockwork recovery and did a flash that failed then ran the 2.1 ruu thinking it would fix it. and that's how the phone got to the state i started with.
i actually got a rom to flash (kinda) with some info from that link i posted. i patched my recovery with files from that link which gave it a custom mtd (table) , i shrunk cache and used the extra space to make up for the bad blocks in system and bind mounted cache to and ext partition on my sd card... and all would be great BUT i realized that the boot partition is corrupt too.. ( which makes sense, since clockwork is known to corrupt both)
so my solution was to flash boot.img to recovery and just boot normally with volup+powerand use amon ra by "fastboot boot " if i need to.
but i cant flash the zip file that patches the kernel to boot using the custom mtd because it's script copies,unpacks,patches then repacks boot.img from /boot but my boot.img is on recovery so im either going to have to edit the .sh in the zip or have someone do the whole custom mtd thing and use the same mtdpartmap.txt and have them nandbackup then give me the boot.img from the backup folder so i can flash it to recovery.
OR have someone manually patch my boot.img file... but i highly doubt i'm going to be able to figure that out or find anyone todo it.
and i'll post the system section of that command in a second.
SoSicWiTiT said:
i found out that my friend installed rom manager n clockwork recovery and did a flash that failed then ran the 2.1 ruu thinking it would fix it. and that's how the phone got to the state i started with.
i actually got a rom to flash (kinda) with some info from that link i posted. i patched my recovery with files from that link which gave it a custom mtd (table) , i shrunk cache and used the extra space to make up for the bad blocks in system and bind mounted cache to and ext partition on my sd card... and all would be great BUT i realized that the boot partition is corrupt too.. ( which makes sense, since clockwork is known to corrupt both)
so my solution was to flash boot.img to recovery and just boot normally with volup+powerand use amon ra by "fastboot boot " if i need to.
but i cant flash the zip file that patches the kernel to boot using the custom mtd because it's script copies,unpacks,patches then repacks boot.img from /boot but my boot.img is on recovery so im either going to have to edit the .sh in the zip or have someone do the whole custom mtd thing and use the same mtdpartmap.txt and have them nandbackup then give me the boot.img from the backup folder so i can flash it to recovery.
OR have someone manually patch my boot.img file... but i highly doubt i'm going to be able to figure that out or find anyone todo it.
and i'll post the system section of that command in a second.
Click to expand...
Click to collapse
I was going to say, holy crap that's a lot of work - but then I've been struggling for a couple hours trying to build mtd-utils (or at least "flash_erase"). I've got all the Makefiles happy (by dropping non-essential parts of the build that require "libuuid"), but now I'm struggling with the linker/toolchain issues to try to avoid the hassles of dynamic link libraries for Amon_RA.
I still think that whatever it is that Clockwork does to get all those flash pages marked as if they are bad is a software error or some sort - so that if you can get
flash_eraseall -N
to do its thing on mtd3, you will recover all those "bad" pages in the system partition. (It is hard to believe that massive physical damage to eeprom would only show up in one or two logical partitions).
Cheers.
bftb0
FWIW,
SoSicWiTiT said:
OR have someone manually patch my boot.img file... but i highly doubt i'm going to be able to figure that out or find anyone todo it.
Click to expand...
Click to collapse
Have a look at this android-dls.com tutorial if you haven't already seen it. Use "split_bootimg.pl" to split apart the boot image into the kernel and compressed ramdisk, and then the ramdisk is just a gzipp'ed "cpio" archive.
The hardest bit about this is finding a verstion of "mkbootimg" - there are some floating around on XDA, or you can build it from the github sources.
It's not too bad, the only secret sauce is the load address for the Eris, which is 0x11200000
This is an excerpt from a shell script I use for repacking boot images - it's the essential part (everything else in the script is just glue).
Code:
mkbootimg --kernel ${_KFIL} --ramdisk new-${_RAMDGZ} --cmdline 'no_console_suspend=1 console=null' --base 0x11200000 --output new-${_BNAM}
i edited the shell script thats supposed to patch it to the best of my abilities (changed all boot.img txt to recovery.img) and it has mkbootimg and everything it needs in the zip, so im going to replace the script in the zip and try flashing it...
and something weird just happened.. i forgot i put boot.img for my rom on /recovery . so in shell just now, i typed reboot recovery expecting amon RA and the phone booted into the os???
even though i patched amon ra with custom mtd to install the rom ( system :300,000 - enough to skip bad blocks, cache: 30,000 ) my boot.img is mtd is set to see 176,000 right?
EDIT
i think i flashed that zip with my version of the script earlier to see what happened and i guess it worked..
Code:
C:\droid\tools>adb shell
sh-3.2# df /system
df /system
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/block/mtdblock3 307200 229296 77904 75% /system
sh-3.2# df /cache
df /cache
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/block/mtdblock4 61440 36500 24940 59% /cache
sh-3.2# df /data
df /data
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/block/mtdblock5 101888 2608 99280 3% /data
sh-3.2#
Hi
Since ever I noticed a weird thing on XMP: /cache partition is always almost empty.
Yes, I checked many times during a long time, it's like is never used.
Code:
$ df
/cache 101.5M 1.1M 100.4M 4096
I have only an empty lost+found dir and two files under recovery dir:
Code:
# ls
-rw-r--r-- root root 105 2012-12-15 02:07 last_install
-rw-r----- root root 3214 2012-12-22 10:36 last_log
For example, in a previous phone /cache was actively used by market for downloading packages before installing them.
Here on XMP I can't upgrade also small packages (40+ megs free on /data) 'cause they're downloaded in /data and fill it before being upgraded, and /cache remains always empty.
In addition, if for some reason playstore crashes while downloading a big app (30megs+), it leaves my /data (almost)full and I must remove by hand a large temporary file from /data/system.
Well, /data is used instead of /cache, 100mb wasted in this way.
Someone else finds experiences the same behaviour?
I was thinking about a linking trick to use that space (for dalvick or swap...), but I'd prefer it would be correctly used by system.
Infos: SK17i, stock .587, root, locked BL, link2sd.
Thanks, bye.
Same in Xperia Mini
Well, this isn't nice...
some ideas
Hello! I was doing several searches and come to some results:
Note: I will not try it on my phone (Xperia Mini Pro) because I'm still an apprentice to flash and modify it, and secondly I have no resources to change my phone if something goes wrong. Finally, sorry for the grammatical errors, I do not speak English natively.
The following are links taken from different forums / blogs (neither is my property).
The general idea is the same, use parted (or any similar app) to edit the partitions inside the phone.
One of the problems that arise and I have doubts about is, what is the file system of internal partitions? ext3?. is something that I have to keep reading.
This is the first blog I found where it gives a possible procedure to follow:
http://aarondiep.blogspot.com.ar/2011/11/resize-partition-on-android.html
Here's a post where one of the users that modify his partitions and, later, returned to stock status.
http://www.droidforums.net/forum/htc-droid-eris/78650-internal-storage-partitions-screwed-up.html
Here is a guide on how you use parted (includes screenshots) BUT IT DOES WITH THE SD CARD
http://mobilecon.info/how-to-partition-sdcard-using-parted-partition.html
Finally, a tool for YAFFS2 file system:
http://forum.xda-developers.com/showthread.php?t=1645412
I hope these links are useful. I really would like to use optimally all the hardware of the phone.
Exitos!! :laugh:
Hi!
Thanks for your interest!
Resizing partitions, I read time ago, is a really critical operation.
I expect to have /cache partition as it has been made, the problem is that apps do not use it!
Resizing that block device to, let's say, zero, would give space to other partitions, but we'd lack a cache.
I definitely believe one of master questions is: where the hell does playstore download packages before installing?
During a big upgrade (let's say angry birds Rio 30+ megs) with df I only see /data growing (and /cache always empty), but after a lot of searching for newest and biggest files (busybox ls -ltrh, busybox ls -Shl) I could not find where they are put.
Once found this download location (no, it's not /data/data/com.android.vending/cache/main), would be easy to bind /cache to this dir.
Apk files from Google Play is downloaded to: data/data/com.android.providers.downloads/cache/
Wysyłane z mojego SK17i za pomocą Tapatalk 2
Hi
Many thanks for this tip!
Well, it's true apk are downloaded there.
BUT I see a strange behaviour: when I recieve the "low memory" (space on /data partition) notification, the apk suddenly disappears! :what:
In logs I see a lot of "couldn't openat chache: no such file or directory" immediately before low space notification log line...
You can use cache as swap if your kernel support it..
Sent from my Walkie'Talkie
Hi
Well, i symlinked /data/data/com.android.providers.downloads/cache to /cache/cache, and the partition is now correctly used by play store.
Is really strange that this is not a system default, btw.
EDIT: the /cache/cache was regularly erased by system, I symlinked /data/data/com.android.providers.downloads/cache to /cache and all is ok now.
EDIT2: you must previously remove (rmdir) the existing /data/data/com.android.providers.downloads/cache!
Could you put the exact command?
luchoz said:
Could you put the exact command?
Click to expand...
Click to collapse
Code:
ln -s /data/data/com.android.providers.downloads/cache /cache
:good:
thank you!!
would use XD
New info!!
http://forum.xda-developers.com/showthread.php?t=1959691
Really interesting
Recently my Nook Tablet 16Gb stopped opening ebooks. It is quite essential feature since I only use it to read books.
The story started ~2-3 years ago. I have bought Nook Tablet and wanted to get root access (to get some nice apps from android market). To get root access I used something like zergRush tutorial os similar. It worked fine until the B&N released new update 1.4.3. I have lost root access. Yet I was able to run already installed apps. It was totally fine with me: ebooks + a few apps from android market.
Yet as I said in the beginning, I could not open ebooks anymore. So I decided to erase & deregister device (and say goodbye to limited root). I clicked it and after Nook restarted the message "Please restart your device and try again...." showed up. After the second restart the message disappeared but Nook was not erased. The same data, the same issue.
Then I decided to google and try to "unbrick" (despite it is not really bricked). I made bootable microSD, and tried loading 1.4.2 factory recovery zip. Everything was fine, I even saw a green checkmark on a screen "Do NOT Turn Off Your Device Installing New Software....". Yet after I ejected microSD and Nook restarted, nothing changed. It was still the same system with exactly the same data.
Next thing that I have tried is to follow steps from github of succulent under acclaim_recovery_sdcard. The same story. After restart Nook always keeps running the same system.
I even formatted the following partitions in one time:
/rom
/bootdata
/system
/cache
/data
The same system after restart...
Tried to apply root for 1.4.3 and install different rom. The same system as before any manipulations.
How is it even possible?! What should I try next? Any ideas appreciated.
Here is additional information. I logged in using adb shell and executed the following commands:
Code:
adb shell
# whoami
root
# cd /tmp
# mkdir mnt
# mount /dev/block/mmcblk0p8 mnt
# du -sh mnt
402.7M mnt
# rm -rf mnt/*
# du -sh mnt
4.0K mnt
# umount mnt
# mount /dev/block/mmcblk0p8 mnt
# du -sh mnt
402.7M mnt
It seems that I cannot modify anything on my NT.
I have also tried to fill some partitions with zeros to see what happens
Code:
# dd if=/dev/zero of=/dev/block/mmcblk0p8
# mount /dev/block/mmcblk0p8 mnt
# du -sh mnt
402.7M mnt
No effect. Could not wipe any data from NT. Any ideas what it can be and how it can be fixed?..
I hate to say it, but I've seen the same thing, and finally gave up after days of trying.
(see page 2 currently in this forum " cant modify any partitions. want to totally ZAP the NT" )
in hundreds of NOOKS reworked, I had this one, like yours, that no matter what I did, nothing about the partitions would change,
I did things to it that should have rendered it totally dead, yet it reboots every time with the exact same OS and installed stuff as before
I tried every utilty, and manually using partition tools many times.
I believe the flash RAM gets set with a "read-only" attribute and its deep, something very special must be done to un-do it.
theres a utility called Roehsoft Drive Expert, which when I mailed the developer he claimed he could correct it, but for me it wasnt worth paying for the app ($34).
I finally just took it for parts and put a working system board in it
Ive been searching for a while for a forum that explains how to root the new nabi 24" BIG TAB HD. trying to install clockworkmod on the tablet.. if anyone can point me in the direction of what I'm looking for that would be greatly appreciated.
jmmac said:
Ive been searching for a while for a forum that explains how to root the new nabi 24" BIG TAB HD. trying to install clockworkmod on the tablet.. if anyone can point me in the direction of what I'm looking for that would be greatly appreciated.
Click to expand...
Click to collapse
As far as I know nobody has talked about it on here except you.
Depending on what kernel patches or android security fixes it has you might be able to try some root programs. There certainly will not be a clockworkmod or TWRP for it yet.
If none of the root methods work it might be possible to use the Dreamtab TWRP.(http://forum.xda-developers.com/android/development/recovery-twrp-2-7-1-0-nabi-dreamtab-hd8-t2813917) If it's like the previous Nabi tablets the bootloader will be unlocked, and you could try booting from that TWRP. The screen and the landscape/portrait might be messed up but it could work. In the last software update to the dreamtab they locked the bootloader so the BIG TAB might be as well. It could be unlocked by
Code:
fastboot oem unlock
^^^ This will ERASE all the data on the tablet.
If you want to try the TWRP way let me know but of course there are dangers involved.
If you try it alone be aware that if you try the dreamtab TWRP load it by
Code:
fastboot boot recovery.img
and NOT
Code:
[STRIKE]fastboot flash recovery recovery.img[/STRIKE]
or you will overwrite your current stock recovery.
also interested! any further info would be great!
schlager said:
also interested! any further info would be great!
Click to expand...
Click to collapse
Do either of you have one? Or just asking?
aicjofs said:
Do either of you have one? Or just asking?
Click to expand...
Click to collapse
i plan to buy one in the next few weeks. mainly need it so i can have two sheets of music in front of me. if there is another tablet that can do that, let me know.
aic, I got one for the kids for Xmas. The Nabi2's have been good but wont last forever, I liked the multi user option and big ass screen on the big tab. Well see how it works out! Once they open and spend time with it I'll be interested in rooting for adaway and such.
codest3r said:
aic, I got one for the kids for Xmas. The Nabi2's have been good but wont last forever, I liked the multi user option and big ass screen on the big tab. Well see how it works out! Once they open and spend time with it I'll be interested in rooting for adaway and such.
Click to expand...
Click to collapse
I have no idea about the BigTab but if it's like the DreamTab it will update when you boot it up. It's hard to get around it. If it does it will likely patch a lot of the more recent exploits that can gain you root. There is the option to try the dream tab recovery like I said above but be really careful with that.
Also one of the Dreamtab updates locked the bootloader. This isn't a big deal as it was unlockable via fastboot. However, if you let the kiddoz, or you start installing a whole bunch of stuff, when you unlock the bootloader you will wipe the tablet back to factory(normal behavior). Best to unlock it as soon as possible.
I own the big tab 20" was able to root using http://forum.xda-developers.com/showthread.php?t=2473747
I did have to unlock the bootloader and tried booting the dream tab recovery from fastboot no dice there so wasn't gonna risk flashing it.
The process took about 20 mins maybe less fully automated it froze at some point so I reset the big tab and tried again at which point kingo program told me I was already rooted download SU was able to update the binary's normal method and been good to go since. Word of warning it does preform a factory reset when you unlock the bootloader so be prepared for that.
I have been working on compiling CWM for the Nabi big tab 20" I'm close but I can't seem to figure out the path for the sdcard currently the recovery boots but can't back anything up with out the correct path entered into the recovery.fstab. This particular tablet does not have a real sdcard nor does it have a slot for an external one. Any help on this would be appreciated when I get it sorted out will add a link for the recovery.
this is what I currently have in my recovery.fstab.
# Android fstab file.
#<src> <mnt_point> <type> <mnt_flags> <fs_mgr_flags>
# The filesystem that contains the filesystem checker binary (typically /system) cannot
# specify MF_CHECK, and must come before any filesystems that do specify MF_CHECK
/dev/block/platform/sdhci-tegra.3/by-name/SOS /recovery emmc defaults defaults
/dev/block/platform/sdhci-tegra.3/by-name/LNX /boot emmc defaults defaults
/dev/block/platform/sdhci-tegra.3/by-name/APP /system ext4 ro wait
/dev/block/platform/sdhci-tegra.3/by-name/CAC /cache ext4 noatime,nosuid,nodev,data=writeback,nodelalloc,errors=panic wait
/dev/block/platform/sdhci-tegra.3/by-name/MSC /misc emmc defaults defaults
/dev/block/platform/sdhci-tegra.3/by-name/USP /staging emmc defaults defaults
/dev/block/platform/sdhci-tegra.3/by-name/MDA /metadata emmc defaults defaults
/dev/block/platform/sdhci-tegra.3/by-name/UDA /data ext4 noatime,nosuid,nodev,data=ordered,noauto_da_alloc,errors=panic wait,encryptable=/dev/block/platform/sdhci-tegra.3/by-name/MDA
/dev/block/platform/sdhci-tegra.3/by-name/TRD /app ext4 defaults wait
/dev/block/sda1 /sdcard vfat defaults voldmanaged=sdcard:auto
When I boot into recovery and attempt to perform a backup to sdcard I get E:Can't mount backup path.
You could download and try a rooting apk like towelroot framaroot or z4root if it has a low android firmware like 2.3.6 or something but only for z4root
I already got it rooted using Kingo root, these tablets are new on the market running kitkat 4.4.4, the end goal I am trying to achieve is making a custom rom but a neassacery first step is to get a working custom recovery so I can backup my stock rom just in case I blow up my tablet =)
lmortal said:
I have been working on compiling CWM for the Nabi big tab 20" I'm close but I can't seem to figure out the path for the sdcard currently the recovery boots but can't back anything up with out the correct path entered into the recovery.fstab. This particular tablet does not have a real sdcard nor does it have a slot for an external one. Any help on this would be appreciated when I get it sorted out will add a link for the recovery.
this is what I currently have in my recovery.fstab.
# Android fstab file.
#<src> <mnt_point> <type> <mnt_flags> <fs_mgr_flags>
# The filesystem that contains the filesystem checker binary (typically /system) cannot
# specify MF_CHECK, and must come before any filesystems that do specify MF_CHECK
/dev/block/platform/sdhci-tegra.3/by-name/SOS /recovery emmc defaults defaults
/dev/block/platform/sdhci-tegra.3/by-name/LNX /boot emmc defaults defaults
/dev/block/platform/sdhci-tegra.3/by-name/APP /system ext4 ro wait
/dev/block/platform/sdhci-tegra.3/by-name/CAC /cache ext4 noatime,nosuid,nodev,data=writeback,nodelalloc,errors=panic wait
/dev/block/platform/sdhci-tegra.3/by-name/MSC /misc emmc defaults defaults
/dev/block/platform/sdhci-tegra.3/by-name/USP /staging emmc defaults defaults
/dev/block/platform/sdhci-tegra.3/by-name/MDA /metadata emmc defaults defaults
/dev/block/platform/sdhci-tegra.3/by-name/UDA /data ext4 noatime,nosuid,nodev,data=ordered,noauto_da_alloc,errors=panic wait,encryptable=/dev/block/platform/sdhci-tegra.3/by-name/MDA
/dev/block/platform/sdhci-tegra.3/by-name/TRD /app ext4 defaults wait
/dev/block/sda1 /sdcard vfat defaults voldmanaged=sdcard:auto
When I boot into recovery and attempt to perform a backup to sdcard I get E:Can't mount backup path.
Click to expand...
Click to collapse
Did you get that from pulling the stock recovery and extracting the recovery.fstab from the ramdisk?
The internal is likely on /data/media, or data/media/0 if it's like all the other Nabi's. Pretty sure /dev/block/sda1 to mount sdcard is not going to work. I'm not as knowledgeable at CWM as I enjoy TWRP so I'm not sure if there is a boardconfig.mk change you can do or if you need to symlink it in an init.rc file.
aicjofs said:
Did you get that from pulling the stock recovery and extracting the recovery.fstab from the ramdisk?
The internal is likely on /data/media, or data/media/0 if it's like all the other Nabi's. Pretty sure /dev/block/sda1 to mount sdcard is not going to work. I'm not as knowledgeable at CWM as I enjoy TWRP so I'm not sure if there is a boardconfig.mk change you can do or if you need to symlink it in an init.rc file.
Click to expand...
Click to collapse
There was something else there originaly but it didn't work either so I ended up using the following from cat /proc/mounts:
/dev/fuse/mnt/shell/emulated /sdcard fuse rw,nosuid,nodev,realtime,user_id=1023,group_id=1023,default_permisions,allow_other nonremovable
Using the above line in the recovery.fstab allowed cwm to see the sdcard but was still unable to mount it. I have been playing around with different things but I am fairly new to this so my knowledge is limited.
lmortal said:
There was something else there originaly but it didn't work either so I ended up using the following from cat /proc/mounts:
/dev/fuse/mnt/shell/emulated /sdcard fuse rw,nosuid,nodev,realtime,user_id=1023,group_id=1023,default_permisions,allow_other nonremovable
Using the above line in the recovery.fstab allowed cwm to see the sdcard but was still unable to mount it. I have been playing around with different things but I am fairly new to this so my knowledge is limited.
Click to expand...
Click to collapse
I'm not really sure without seeing any of your code(device tree), finished recovery or any of the stock recovery.
I haven't made CWM in so long. Something like?
/dev/null /sdcard datamedia defaults recoveryonly
dd the mmcblock0pX for the recovery and boot and we can make something work. How much space is the recovery partition?
aicjofs said:
I'm not really sure without seeing any of your code(device tree), finished recovery or any of the stock recovery.
I haven't made CWM in so long. Something like?
/dev/null /sdcard datamedia defaults recoveryonly
dd the mmcblock0pX for the recovery and boot and we can make something work. How much space is the recovery partition?
Click to expand...
Click to collapse
I sent you a pm with a drop box link with my files in the mean time gonna try compiling with your suggestion and see what happens.
---------- Post added at 04:17 PM ---------- Previous post was at 03:36 PM ----------
I tried compiling with:
#<src> <mnt_point> <type> <mnt_flags> <fs_mgr_flags>
/dev/null /sdcard fuse datamedia,recoveryonly defaults
It compiled successfully and I was able to flash it, the sdcard showed up in the mount menu but was not mountable still.
---------- Post added at 05:10 PM ---------- Previous post was at 04:17 PM ----------
Okay so my latest build using:
/dev/block/sda1 sdcard fuse defaults nonremovable
Allowed backup to the sdcard of everything with the exception of /data got "Error while making a backup image of /data!"
Also still unable to mount sdcard under the mounts and storage menu.
I believe the reason for the error while backing up data was due to available space when I restarted the tablet there was only 99.59MB available and I think the data would have needed more space then that.
I kept running into problems with CWM recovery but with the help of aicjofs I was able to compile a working TWRP with usb drive support, I don't yet have enough post to make an outside link so if some one can pm me I can give the link to be posted here with the recovery I made.
Working TWRP 2.8.1.0 for Nabi BigTab 20
Here is a TWRP recovery 2.8.1.0 for the Nabi BigTab 20" model
TWRP 2.8.1.0 for NV20A(BigTab20)
Built by @lmortal. We spent a lot of our Sunday sorting all the issue so click the thanks button for Imortal in the post above this one!
aicjofs said:
Here is a TWRP recovery 2.8.1.0 for the Nabi BigTab 20" model
TWRP 2.8.1.0 for NV20A(BigTab20)
Built by @lmortal. We spent a lot of our Sunday sorting all the issue so click the thanks button for Imortal in the post above this one!
Click to expand...
Click to collapse
Fixed an error where /addon was not mounting. re uploaded recovery image to the above link.
I can't unlock my bootloader.
lmortal said:
I own the big tab 20" was able to root using http://forum.xda-developers.com/showthread.php?t=2473747
I did have to unlock the bootloader and tried booting the dream tab recovery from fastboot no dice there so wasn't gonna risk flashing it.
The process took about 20 mins maybe less fully automated it froze at some point so I reset the big tab and tried again at which point kingo program told me I was already rooted download SU was able to update the binary's normal method and been good to go since. Word of warning it does preform a factory reset when you unlock the bootloader so be prepared for that.
Click to expand...
Click to collapse
I've ben trying to root my Big Tab 24". You said you had to unlock the bootloader. I can't get it into bootlad mode or unlock the bootloader. I tried fastboot. I tried every button combination I could think of. (not too many considering it only has three physical buttons) I tried rooting it with Kingo without unlocking the bootloader. Nothing is working. Please help. What am I doing wrong or not doing right?
Fastboot is the boot loader make sure you have USB debugging enabled and connect the tab to a PC you can then use the command "adb reboot-bootloader" the command to unlock is "fastboot OEM unlock"
Okay so here it goes. I had missing IMEI problem in a custom ROM when not on a samsung base. I had a neatefs (app on android) backup which I tried to restore using HC ktool (Bad idea, I know). It gives me a successfully done message and tells me to reboot. Now my phone is stuck in bootloop no matter what (Stock firmware, wipe data, factory reset nothing works) and the recovery gives the error mentioned in the title.
/efs is unmountable for me. I tried various methods mentioned for S3 and Note such as connecting the phone in ADB mode and following the steps but none of that works.
Have you tried formatting /system, /boot, /preload /storage/sdcard0 ? From a rooted kernel, of course.
And then trying reflashing the original stock rom.
hope this helps http://forum.xda-developers.com/galaxy-s3/general/how-to-fix-efailed-to-mount-efs-invalid-t2858056
AKAndrew41 said:
Have you tried formatting /system, /boot, /preload /storage/sdcard0 ? From a rooted kernel, of course.
And then trying reflashing the original stock rom.
Click to expand...
Click to collapse
I have tried formatting /system and I don't think that formatting /sdcard0 is going to help, it will just increase the burdon of data transfer. As for others, I was afraid it will make more mess than solve any. Are you sure formatting those will not affect anything?
ruleh said:
hope this helps http://forum.xda-developers.com/galaxy-s3/general/how-to-fix-efailed-to-mount-efs-invalid-t2858056
Click to expand...
Click to collapse
I've tried all that, none helps. I've even installed a busybox as mentioned somewhere else which said that the syntax mke2fs is not available without a busybox. Nothing worked. Still unable to mount efs afterwards.
pHraiL^ said:
I have tried formatting /system and I don't think that formatting /sdcard0 is going to help, it will just increase the burdon of data transfer. As for others, I was afraid it will make more mess than solve any. Are you sure formatting those will not affect anything?
Click to expand...
Click to collapse
I'm pretty sure it won't damage anything, or at least to me didn't. Because whenever I want to reinstall a new ROM I always format everything I've mentioned earlier so I don't find it harmful for the device, as long as you don't have data worth backing up.
Also, wipe dalvik.
If you installed busybox, make sure you uninstall the previous version prin pressing uninstall, and them installing 1.23.1 because for me sometimes it says it's intalled, but after reboot I still have the old one.
After you do that, connect phone to PC and try running
adb shell
Once you do that, give a try to the command
umount -f /efs
even if it says it's umounted, then type
mount /dev/block/mmcblk0p3 /efs
mke2fs /dev/block/mmcblk0p3
mount -w -t ext4 /dev/block/mmcblk0p3
Click to expand...
Click to collapse
These two are the commands everyone is talking about the S3 phone having same issue. I tried everything. The first command works and it shows something like:
"The filesystem will be automatically checked every 35 mounts or 180 days, whichever comes first. Use tune2fs -c or -i to override."
For the second line of code when I try, this is what I get:
"It says "mount: can´t find /dev/block/mmcblk0p3 in /etc/fstab"
Now I have also tried adding space and /efs to the second command. It gives me nothing, not even any error. So I presume it works but then when I reboot efs is still messed up. I have no idea what these commands does actually. I think it has something related to re partitioning. Shouldn't the second command line give the same output as the first one? Its been a whole day searching for this thing. I got my phone messed up real bad.
EDIT: One more thing, when I hit the # df command on ADB, it shows 3 drives (/dev, /cache, /emmc) when not in su and 4 when in su (/dev, /cache, /emmc, /system). No where it shows any efs partition. Is there suppose to be any?
EDIT2: After the second line command. Using mount -t following someone's guide I get the efs partition but I think it is way too small. See the attachment. This partition is gone again after reboot.
OH GOD I got it working. After more searching, I found out the the block used for efs storage in S2 is mmcblk0p1 not mmcblk0p3. Phew!
Follow the same commands to make it work. Just rename the block.
Here is a guide which helped me figure out the block: http://www.usoftsmartphone.com/t306464.html
Thanks everyone
im having same trouble now with the S7. the page you share not there anymore. please share me how to figure out the block