[Q] Q: E: Can't mount /dev/block/mmcblk0p2 - G Tablet Q&A, Help & Troubleshooting

Hey everyone,
I'm enjoying my gTablet so far, but I've been having this nagging problem since about 4 ROM's ago.. To sum things up my gTablet works OK, but I get a specific error when I try to wipe dalvik-cache:
E: Can't mount /dev/block/mmcblk0p2 (File exists)
I've checked the threads for other devices but since this partitioning we're dealing with I'm loathe to move without knowing what I am doing. Also the other issues didn't seem to relate directly.
Lastly, a question -- My device has about 90 apps installed and it seems to take an extended period of time to boot -- Could this be the apps (obviously) or is it tied to the fact that currently there isn't a dalvik-cache?
Lastly, I've partitioned after doing an NVFlash earlier using 2048;0. I don't recall getting the error on the first few ROM loads, and every ROM I load still runs -- Just perplexed at why I can't clear the dalvik-cache and if it relates to the problems I have with boot times.
Recovery: cwm .08
Partitioned scheme: 2048;0

I have this exact same problem E: Can't mount /dev/block/mmcblk0p2 (File exists)
. Using basic boot recovery, the error prevents the ability to wipe/factory reset.
. Using CWM.08, the error appears when doing Dalvik Cache wipe.
Hope to have help.

Folks,
I have seen two answers to this question about the
memory location:
1. Said it had something to do with not having a microSD
card in the slot.
2. Said it was related to our G-Tablet having 512 vs 1 Meg
of memory and the firmware reads it wrong.
Either way, I've seen it on my two tabs and heard from a
ton of other folks and it never seems to make a difference.
Don't worry; be happy!!! Forget it!
Rev
EDIT: As for the "can't wipe Dalvik Cache" -- I haven't
run into that one before and can't say.......

Related

E: cant mount /dev/block/mmcblk1p2

When I go to wipe dalvik cache I am presented with this message. I am currently on Nero B3. After this error, I tried the SD_Fix.zip to see if that changed anything, it did not.
Is this normal? I do not recall it before.
Related...
What is going on with all the froyo roms being weird about mounting, and not being able to read and/or write to (external/internal)....
I know not everyone has the issue.... I have ODIN'd to stock before flashing the roms just to be overly safe. I have also formatted both the internal and external sd cards as well.

The error when "wipe dalvik cache"! Thanks!

hey, I installed the CM7 today by using the clockworkmod 0.8 (I used the VEgan 5.11 before )
I wipe cache partition, wipe data, wipe, wipe Dalvik Cache
but when I wipe Dalvik Cache, there is a error: can't mount dev/block/mmcblk0p2
anyway, I install the CM7 successfully... but I am a little worried about that erro...
so why this error appear? what is that mean?
do I need to fix this error and then reinstall the CM7?
sorry for so much naive question! thanks!
savage0,
I've read two or three explanations for why that
error comes up -- but I really don't know why.
I do know that a pile of folks have been getting
that message almost since the G-Tablet came
out and I have never heard of it meaning anything
significant -- or anyone having problems as a
result.
Forget it is my advice.
Rev
Exactly. Had that issue since my first flash and nothing fixes it. On the good side, like the Rev says, it has no known meaning or consequence.
savage0 said:
h
but when I wipe Dalvik Cache, there is a error: can't mount dev/block/mmcblk0p2
Click to expand...
Click to collapse
im gettting the same error, but when i try to mount /data, and now im stuck in a constant boot loop
savage0 said:
but when I wipe Dalvik Cache, there is a error: can't mount dev/block/mmcblk0p2
Click to expand...
Click to collapse
The correct error message actually is:
Code:
E:Can't mount /dev/block/mmcblk2p2
(File exists)
As butchconner said, it's a harmless error message. It just means that
a) You don't have an external SD card in the SD card slot, or
b) If you do have one, it does not have a second partition on it. Most likely, you have a SD card with a single VFAT partition.
When you select the "Wipe Dalvik Cache" option, CWM does, basically, this:
1. Mounts the /data partition. This, on the gTablet, is the second partition (Linux ext3 type) on the internal SD card, /dev/block/mmcblk3.
2. Mounts the /sd-ext partition. This is the second partition (generally of Linux ext3 type) on the external SD card, /dev/block/mmcblk2.
3. Mounts the /cache partition. This is a yaffs2 filesystem (on /dev/block/mtdblock4) on the in-built NAND flash chip.
4. Prints a "Confirm wipe?" message and a "Yes - Wipe Dalvik Cache" menu.
5. Removes the entire /data/dalvik-cache directory tree.
6. Removes the entire /cache/dalvik-cache directory tree.
7. Removes the entire /sd-ext/dalvik-cache directory tree.
The error message you noticed comes at step 2 because there is no external SD card, or, the external SD card does not have 2 partitions on it.
The second line, "(File exists)", is the left-over result of a mkdir() system call used to create the mount-point directory which already exists.
If you can read C code and wish to look at this further, look at the show_advanced_menu() function here:
https://github.com/CyanogenMod/android_bootable_recovery/blob/gingerbread/extendedcommands.c
The link is for a newer version of CWM, so the error message is different.
Cheers!

Manually Wiping Data Partition

My phone did the whole failed encryption bull shhhh. Figured that the issue is either located in the Vibrants DATA Partition or the SDCARD Partition (internal memory). I have attempted to ODIN back to stock but when it goes through the wipe data factory reset stage at the very end, the Data Partition fails.
I'd like to know of a way to manually get into the phone and format this partition clean. Then maybe odin will work.
Can it be done with ADB?
I got an old REcovery put back on trying things out from step one when I first got the phone a year ago.
Boot and Data partitions wont format. Boot just fails and I doubt thats where the issue is. But Data gives me this error:
Formatting DATA:...
E:Can't mount /dev/block/mmcblk0p2
(File exists)
Error mounting /data/!
Skipping format...
Done.
So anyone got any pearls of wisdom here? Or is this thing truly bricked?
nFiniti said:
My phone did the whole failed encryption bull shhhh. Figured that the issue is either located in the Vibrants DATA Partition or the SDCARD Partition (internal memory). I have attempted to ODIN back to stock but when it goes through the wipe data factory reset stage at the very end, the Data Partition fails.
I'd like to know of a way to manually get into the phone and format this partition clean. Then maybe odin will work.
Can it be done with ADB?
I got an old REcovery put back on trying things out from step one when I first got the phone a year ago.
Boot and Data partitions wont format. Boot just fails and I doubt thats where the issue is. But Data gives me this error:
Formatting DATA:...
E:Can't mount /dev/block/mmcblk0p2
(File exists)
Error mounting /data/!
Skipping format...
Done.
So anyone got any pearls of wisdom here? Or is this thing truly bricked?
Click to expand...
Click to collapse
Read this, http://forum.xda-developers.com/showthread.php?t=1580902 . There is no known fix just a work around, good luck. That bug made me go back to GB ROMS, it's ICS related unfortunately.
Sent from my T959 using XDA Premium App
iTz KeeFy is correct. There is no "fix" for the ICS bug. Only a work around that requires the use of your external sdcard.
Odin >> Heimdall >> JTAG will not fix it.

[Q] Unable to mount preinstall, Is this normal?

So during my battles trying to get JB on my atrix I performed a fastboot wipe on just about everything, including preinstall. Now anytime I flash something I get the error "unable to mount preinstall" is this bad or normal? I just searched quite a bit and found no one mentioning it.
Where are you getting this message? In the recovery?
If you wiped everything, that's perfectly normal. You can't mount a non-existent filesystem. You'll need to create a filesystem first before you (or a script) can mount it.

Unable to Mount Internal Storage

Hello all,
I have run in to some issues with my phone today, and have spent several hours trying out different things, and reading through the forums.
My phone is unlocked, s-on, and have had no problem loading multiple different ROMs in the past. The most recent ROM I was using was Carbon 1.7. It had been working well for the most part, periodically the phone would restart itself, but I didn't really consider that an issue.
Today though, I was taking a photo with the phone, and it restarted itself. Upon the restart, it became stuck at the HTC boot logo. Once I got home I investigated it some more, and figured I'd try and just wipe the cache/dalvik, and this is where I came to realize I might be in a big mess than originally thought.
I'm not able to wipe the cache, dalvik, system, or anything. I try to flash a ROM, and it seems to work, and since i'm S-On, I try to load the boot image with Hasoon's All in One Kit, but still stuck at the boot logo. I try to do a full wipe from within the ROM when install, and also tried a full wipe with Super Wipe, but no luck.
This is what I'm seeing (I've tried using TWRP, CWM, EXT, and all come up with something similar):
E: Unable to mount '/cache'
E: Unable to mount '/data'
E: Unable to mount '/system'
E: Unable to mount '/devlog'
E: Unable to mount '/emmc'
E: Unable to mount '/emmc'
E: Unable to mount internal storage
I've racked my brain as much as I possibly can. I consider myself a noob when it comes to most of this stuff still, so any help would be greatly appreciated.
Thanks so much
I recently sold my amaze to a coworker and over the weekend if started doing the same thing i spent all night trying to figure it out... I did a full wipe except sd and it wouldn't recognize the sd card. It was running cm10.1
Sent from my SGH-M919 using Tapatalk 4 Beta
S-Off your amaze. Then apply a stock RUU. I had to downgrade to GB to recover my phone. Android 4.1.x and 4.2.x roms tend to have this bug of partition corruption with our phones.
Fix internal storage error
If you wipe or factory reset it from the bootloader, it may kill the internal storage partition. Just connect USB, go into recovery, unmount and remount USB storage, it will recognize the internal storage and say its unformatted. Then format it as fat32. Then you can do a wipe and reimage. Thanks to OM4 from XDA for posting this. Worked for me!!
http://forum.xda-developers.com/show....php?t=1975989
heyliddle said:
Hello all,
I have run in to some issues with my phone today, and have spent several hours trying out different things, and reading through the forums.
My phone is unlocked, s-on, and have had no problem loading multiple different ROMs in the past. The most recent ROM I was using was Carbon 1.7. It had been working well for the most part, periodically the phone would restart itself, but I didn't really consider that an issue.
Today though, I was taking a photo with the phone, and it restarted itself. Upon the restart, it became stuck at the HTC boot logo. Once I got home I investigated it some more, and figured I'd try and just wipe the cache/dalvik, and this is where I came to realize I might be in a big mess than originally thought.
I'm not able to wipe the cache, dalvik, system, or anything. I try to flash a ROM, and it seems to work, and since i'm S-On, I try to load the boot image with Hasoon's All in One Kit, but still stuck at the boot logo. I try to do a full wipe from within the ROM when install, and also tried a full wipe with Super Wipe, but no luck.
This is what I'm seeing (I've tried using TWRP, CWM, EXT, and all come up with something similar):
E: Unable to mount '/cache'
E: Unable to mount '/data'
E: Unable to mount '/system'
E: Unable to mount '/devlog'
E: Unable to mount '/emmc'
E: Unable to mount '/emmc'
E: Unable to mount internal storage
I've racked my brain as much as I possibly can. I consider myself a noob when it comes to most of this stuff still, so any help would be greatly appreciated.
Thanks so much
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