Hi,
i just confused about the partitions table and the system mount points.
mmcblk0p11 (UMS) is the internal SD card.
so why the android system mount the internal SD card as
/dev/block/vold/259:3 on /mnt/sdcard
and not like this
/dev/block/mmcblk0p11 on /mnt/sdcard
maybe i'm wrong and mmcblk0p11 isn't the internal SD card?
thanks.
which rom are you using, some of 4.0.3 and higher roms have reversed the mounting points so internal reads as external in the partition table.
Cosmic Blue said:
which rom are you using, some of 4.0.3 and higher roms have reversed the mounting points so internal reads as external in the partition table.
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CyanogenMod 10.1
To be clear, why all the partitions (except Internal/External SD) like SYSTEMFS (/system), CAHCE (/cache)... is mounted from /dev/block/mmcbkl0pX
but the Internal/External SD is mounted from /dev/block/vold/....
there must be a reason that prevent the system to mount it from:
/dev/block/mmcblk0p11 - Internal
/dev/block/mmcblk1pX - External
My question is what is the reason?
Related
On a modified boot image for Acer Liquid e froyo: //android.modaco.com/content/acer-liquid-liquid-modaco-com/317685/apps2sd-on-froyo/, the ext of my 16Gb class 2 sd is getting mounted on boot, however when I place my 8Gb class 6 sd, its ext does not mount on boot.
Mind you, They were formatted the same way, and same way they can be reached: /dev/block/mmcblk0p2 /system/sd ext2 rw,errors=continue 0 0
I had to prove the 8Gb sd by manually mounting it and it mounted, but just not on boot.
I am sharing this in this forum. Hope this is the right place.
I have been trying to re-partition my external SD card using one vfat partition and a bigger ext4 partition. Then my intention was to mount ext4 through an init.d script.
Partitioning (with gparted under Linux) was of course not a problem.
However, the system does not recognize the multi partition external SD card.
I am using Leedroid's HC (but I don't think that matter so much).
After system has fully started it says "SD card is damaged", do you want to format it.
So yes ... I formatted it. Then mounted it again under Ubuntu.
Back into gparted ... and ... now there is no partition table any more !
The android formatting has just written a vfat file system over the whole device without using a partition table.
So ... no luck.
Then I looked at the volume manager. In the file /etc/vold.fstab we can see:
dev_mount sdcard /mnt/sdcard 33 /devices/platform/msm_sdcc.2/mmc_host/mmc0
dev_mount sdcard2 /mnt/sdcard/ext_sd auto /devices/platform/msm_sdcc.4/mmc_host/mmc2
dev_mount usb /mnt/sdcard/usb auto /devices/platform/msm_hsusb_host.0
So, I re-formatted the SD card with a vfat and ext4 partition and changed the vold.fstab to:
dev_mount sdcard /mnt/sdcard 33 /devices/platform/msm_sdcc.2/mmc_host/mmc0
dev_mount sdcard2 /mnt/sdcard/ext_sd 1 /devices/platform/msm_sdcc.4/mmc_host/mmc2
dev_mount usb /mnt/sdcard/usb auto /devices/platform/msm_hsusb_host.0
(so I changed "auto" into "1" in the second line)
Well after booting ... no good! System still thinks SD card is damaged and proposed to re-format it.
I am guessing there must be a way tricking the vold daemon into using the first partition (vfat) as file system instead of the whole device block ... but I have not found it yet.
Maybe I am missing something very simple here so any help would be appreciated.
Normally questions go in the Q&A section.
Never really checked into this but I don't think the Android framework has capability to handle more than one partition per device even if you supply the mount points.
On the color nook it works as you described because the primary boot device was the SD card. You might try searching through the Nook forum
DigitalMD said:
Normally questions go in the Q&A section.
Never really checked into this but I don't think the Android framework has capability to handle more than one partition per device even if you supply the mount points.
On the color nook it works as you described because the primary boot device was the SD card. You might try searching through the Nook forum
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Well, I have multiple partitions on external SD card on my HTC Desire phone. They appear under /dev/block/mmcblkXp1 and /dev/block/mmcblkXp2. However, on the flyer I only see /dev/block/mmcblkYp1 (which is the first partition of the internal memory mounted on /sdcard). There is a different mechanism for the mount of /sdcard2 (external SD card). No entries in /dev/block are created for it.
I will have a look at Nook forum tonight. Thanks for response.
foobar66 said:
Well, I have multiple partitions on external SD card on my HTC Desire phone. They appear under /dev/block/mmcblkXp1 and /dev/block/mmcblkXp2. However, on the flyer I only see /dev/block/mmcblkYp1 (which is the first partition of the internal memory mounted on /sdcard). There is a different mechanism for the mount of /sdcard2 (external SD card). No entries in /dev/block are created for it.
I will have a look at Nook forum tonight. Thanks for response.
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Android system needs first partition of sdcard to be vfat
Sent from my LT15i using XDA App
DooMLoRD said:
Android system needs first partition of sdcard to be vfat
Sent from my LT15i using XDA App
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Well, OK ... but it does not work if there is a partition table !
So 2 partitions (1 VFAT and 1 ext4 does not work).
It only works when the whole block device just contains a VFAT file system (without partition table).
OK, I figured it out (kinda).
Apparently, when I create 2 partitions (1 VFAT and 1 ext4) via gparted under Ubuntu then the Flyer won't properly recognize the partition table (that is my guess). Don't know why ...
I created 2 partitions via CWM ... and now it is working fine.
So I have:
/dev/block/mmcblk1p1 -> VFAT
/dev/block/mmcblk1p2 -> EXT4
hi, just found this is SOLVE (congrats) and wondered whether this allows SD > supported 256GB on (G900f) S5.
Can you create many partitions on the SD (maybe up to 256) on a 1 TB microSD?
thanks
On my Archos 101IT I formatted the (removable) SD card as ext3. This was required for TitaniumBackup. When UrukDroid is booted, it mounts the file system as:
/dev/block/vold/179:17 on /mnt/storage/sdcard type ext3 (rw,nosuid,nodev,noexec,noatime,nodiratime,fmode=0 666,dmode=0777,errors=continue,data=ordered)
I do not want the fmode/dmode since these make it impossible to protect files on the storage (again, as required by TitaniumBackup).
Where can I change what to have this file system mounted with the right options on reboot?
ANSWER:
Urukdroid has a special script, /system/bin/mount_sdcard.sh, that mounts the SD card upon boot. This script understands (V)FAT and EXT4. Anything else is left to the vold automounter. Archos modded vold so it could do a bit more than stock A 2.1 vold, e.g., mount EXT3 file systems.
I upgraded the file system on the SD card to EXT4, and now mount_sdcard.sh mounts the SD card upon boot with the correct mount options.
Thanks to $aur0n for helping me solve this.
Upgrading an EXT2 or EXT3 file system to EXT4 is easy, see https://ext4.wiki.kernel.org/index.php/Ext4_Howto#Converting_an_ext3_filesystem_to_ext4 .
So ran out of storage in /data partition, decided to create 2 partitions in my external SD and i created it using Gparted, one is ext4 and the other is fat32, now the phone refuses to mount the ext4 partition from Link2SD.
Looking at the vold.fstab file and sysfs paths(/devices/platform/mtk-msdc.0) , it seems that our phone can mount only 2 (+1 otg) partitions ? (or is it just 2 sd cards ?)
is it even possible to mount the second partiton ?? (No /devices/platform/msm_sdcc )
I do know of the EMMC method, i don't like it ;p
A block for the second partiton is present in /dev/block,(mmcblk1p2) gonna mount and see what happens
gowtham121 said:
So ran out of storage in /data partition, decided to create 2 partitions in my external SD and i created it using Gparted, one is ext4 and the other is fat32, now the phone refuses to mount the ext4 partition from Link2SD.
Looking at the vold.fstab file and sysfs paths(/devices/platform/mtk-msdc.0) , it seems that our phone can mount only 2 (+1 otg) partitions ? (or is it just 2 sd cards ?)
is it even possible to mount the second partiton ?? (No /devices/platform/msm_sdcc )
I do know of the EMMC method, i don't like it ;p
A block for the second partiton is present in /dev/block,(mmcblk1p2) gonna mount and see what happens
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Click to collapse
hi, gowtham121
ROOT your phone first,
create 2 partitions as fat32 on sdcard
its work on my chd:fingers-crossed:
My cresta has a system partition (/system), a data (/data) partition and a sdcard (/mnt/sdcard)
And a mounted (/mnt/external_sd) external SD kart (8Gb)
The data (/data) partition is only 1 Gb and the rest of the internal memory is used bij the mounted sdcard partition. The data partition is allmost full and I can't move anymore apps to the sdcard (not all of the apps are movabe)
I can mount a external sd-card but I can't use it for moving applications. I only can move to the internal sdcard.
I want the internal sdcard (/sdcard) removed and the 2Gb added to my data partition.
And the mount of the (internat) sdcard witch is removed must be set to the mount /external_sd
I'm a newbie, so can anyone help me to change this?
There is nog data or apps on this tablet (Cresta CTP818) and I have a backup of the Original rom (tested to restore)
So I can try whatever I want.