Database Users

[Q] Can't mount /dev/block/mmcblk0p8

I would like some help please.
Have bricked my a500 during attempt to falsh vach leaked ICS.
Switchme was used before clearing data and I forgot to delete a profile. This is I think the cause of my problem.
I cannot proceed with any ROM flashing until data partition is cleared.
I am using RA-ICONIA-3.15 recovery kernel.
I can mount and format CACHE SYSTEM FLEXROM partitions.
Attempting to mount data this is the message
E:Can't mount /dev/block/mmcblk0p8 (File exists)
Now my poor A500 will not get past 'acer'screen when trying to boot.
Question 1: How can I restore access to the DATA partition?
Question 2: How do I wipe my internal storage and start over?
I have a nand backup before this started on external SD card. Uncertain if I should restore this.
Thanks in advance.

DrPlumEU said:
I would like some help please.
Have bricked my a500 during attempt to falsh vach leaked ICS.
Switchme was used before clearing data and I forgot to delete a profile. This is I think the cause of my problem.
I cannot proceed with any ROM flashing until data partition is cleared.
I am using RA-ICONIA-3.15 recovery kernel.
I can mount and format CACHE SYSTEM FLEXROM partitions.
Attempting to mount data this is the message
E:Can't mount /dev/block/mmcblk0p8 (File exists)
Now my poor A500 will not get past 'acer'screen when trying to boot.
Question 1: How can I restore access to the DATA partition?
Question 2: How do I wipe my internal storage and start over?
I have a nand backup before this started on external SD card. Uncertain if I should restore this.
Thanks in advance.
Click to expand...
Click to collapse
try this
If you are using Thor's CWM. And his recovery only;
Here are the steps to completely wipe all internal data. And give it a clean internal system (according to Thor)
Note: Optional Formatting.
If you really want to remove EVERYTHING in Internal Memory, at this point, go to Backup and Restore. Select "Toggle backup and restore of internal storage (/data/media). Enable this setting by selecting it. By default, it is disabled. Then proceed to the formatting steps. This will format the Entire Internal Memory when you proceed.
Note, this will format EVERYTHING in internal memory (not ext sd card)
Select Go Back, Goto Mounts and Storage
1. Format System
2. Format Cache
3. Format Dalvik
4. Format Flexrom
After you reboot, I believe it resets back to the defaults.
try to install the rom with the normal procedures.
this what i used and it worked great no problems
note** i am just fowarding info that was passed to me. and this will erase you backups
---------------------------------------------------------------------------------------------
IF you are running RA Revamped Recovery, then you may want to contact Drellisdee at his thread;
http://forum.xda-developers.com/show....php?t=1459821
He knows the procedures to do the same.it's a tricky process, and he knows more about his recovery than I do.

Thank you for the prompt response. Already tried your recipe with no luck.
I need access to the DATA partition and do not know how to go about that. Once have access to the internal disk, would like to know how to completely wipe this if that what it takes.
Thanks
PS: If I truly have bricked the device it is still in 12mo warranty, so will contact Acer care centre if no tricks work.
PPS: Maybe I now have excuse needed to upgrade to Tegra 3 device. The Acer Iconia A700 looks tempting

i think i have seen something like that when fixing mine but did not touch it....as im not a pro, hopefully somone with a litle more in depth knowledge sees this and can help.
sorry

Have you tried restoring your nandroid backup? This has recovered the error for me on my phone before when the /data partition became corrupt. Worth a shot.

Sadly, restoration of the nandroid backup was not successful.
I have notice that I pressed wrong volume button when attempting the hard reset. Will try the correct procedure later after work. Hopefully a proper hard reset then restore with one of Vache stock roms will have me up and running.
UPDATE: Sadly hard reset fails to load. My poor a500 needs resuscitation at acer clinic

I had the exact same problem, although I caused the problem in a different manner. You need to be able to use adb to get it going again. If you are not familiar with adb, do a search and you can find plenty of help. That's what I had to do. Unfortunately, my skills with adb are pretty much non-existent, so I can't really help you with that part.
Once you get adb going on your computer and it recognizes your A500, follow these steps:
You will need to boot into my recovery and open adb shell.
This will cause loss of all data contained on /data which will lose your /data/media.
From adb shell:
mount (This is to check data isn't mounted. If mounted use "umount data")
mke2fs -j -b 4096 /dev/block/mmcblk0p8
tune2fs -O extents,uninit_bg,dir_index -C 1 /dev/block/mmcblk0p8
e2fsck -fy /dev/block/mmcblk0p8
After this is done your file system on /data will be fixed. You can install the ROM of your choice. Good luck!
(These instructions were originally provided to me by drellisdee)

Thanks for the answer on your previous post. I fixed my /data mount.
Love to unbrick my acer for the 50th time
Did not have this error tho, before I tried to convert the /data mount to ext4

DrPlumEU said:
I would like some help please.
Have bricked my a500 during attempt to falsh vach leaked ICS.
Switchme was used before clearing data and I forgot to delete a profile. This is I think the cause of my problem.
I cannot proceed with any ROM flashing until data partition is cleared.
I am using RA-ICONIA-3.15 recovery kernel.
I can mount and format CACHE SYSTEM FLEXROM partitions.
Attempting to mount data this is the message
E:Can't mount /dev/block/mmcblk0p8 (File exists)
Now my poor A500 will not get past 'acer'screen when trying to boot.
Question 1: How can I restore access to the DATA partition?
Question 2: How do I wipe my internal storage and start over?
I have a nand backup before this started on external SD card. Uncertain if I should restore this.
Thanks in advance.
Click to expand...
Click to collapse
If you switch the A500 off and whilst switching it on hold the volume up button and start toggling the rotation lock on and off it should clear the internal memory completely. Then flash an update.zip from a MicroSD. Otherwise use the Iconia software update tool that's floating around in APX mode. Make sure you have your UID for this

Ping192 said:
Did not have this error tho, before I tried to convert the /data mount to ext4
Click to expand...
Click to collapse
That's exactly what caused my problem. Glad you are working again.

Resolved by great customer support...
To close this thread I wish to congratulate the Acer customer support team in Plymouth who have restored my Acer Iconia A500 to working order in under a week.
It is upgraded OTA to Android 3.2.1.
As still in warranty, no charge for the failure of the hard-drive partitioning!
Great work. Good customer service.

thanks lovable people in this thread
thanks lovable people in this thread you solved my problem . especially Dr. McKnight (23rd February 2012, 03:48 PM) back in the beginning of the thread. His solution using thor's recovery was enough to solve my problem. Wonderful and thank you
/Mikkel

spoupard said:
From adb shell:
mount (This is to check data isn't mounted. If mounted use "umount data")
mke2fs -j -b 4096 /dev/block/mmcblk0p8
tune2fs -O extents,uninit_bg,dir_index -C 1 /dev/block/mmcblk0p8
e2fsck -fy /dev/block/mmcblk0p8
Click to expand...
Click to collapse
When I do the "mke2fs -j -b 4096 /dev/block/mmcblk0p8" command from adb's shell, it takes forever (I let it run for hours). Something I was thinking about, could I simply "rm -rf /dev/block/mmcblk0p8" first, and then run the above commands? Also, should I not add the "-t ext4" option to the mke2fs command?

kerijan2003 said:
When I do the "mke2fs -j -b 4096 /dev/block/mmcblk0p8" command from adb's shell, it takes forever (I let it run for hours). Something I was thinking about, could I simply "rm -rf /dev/block/mmcblk0p8" first, and then run the above commands? Also, should I not add the "-t ext4" option to the mke2fs command?
Click to expand...
Click to collapse
Try in fastboot mode execute:
fastboot -w

[Q] Totally bricked :/ need help by developers and all

Dear xda and Users,
I wanted to increase the installation storage while i was using GB 2.3 official then updated to DZO aurora ics rom.
I used partition from xda threads and kept official partition file also as back up everything worked well in dzo aurora then i felt i need to do it in GB 2.3 and try without doing the official partition in CWM.
I put DLOAD folder with official GB 2.3 and did an update with pressing + and - with power button. The update fails every time and all i can get is the android system recovery <3e> i do not even get a usb folder pop up in windows on the pink screen.
I cant even install or run any zips of rom because signature verification fails :'(
PLEASE HELP ME " i see a option apply update from sd and i dont have any signed files to do it please help me "
Note - i cant acces the phone to use clock work mode or pink screen then a connect usb to pc and a folder popup please dont give me <--- this solutions and i read so many threads and i dint get anything like mine "

Munchkinrussel said:
Dear xda and Users,
I wanted to increase the installation storage while i was using GB 2.3 official then updated to DZO aurora ics rom.
I used partition from xda threads and kept official partition file also as back up everything worked well in dzo aurora then i felt i need to do it in GB 2.3 and try without doing the official partition in CWM.
I put DLOAD folder with official GB 2.3 and did an update with pressing + and - with power button. The update fails every time and all i can get is the android system recovery <3e> i do not even get a usb folder pop up in windows on the pink screen.
I cant even install or run any zips of rom because signature verification fails :'(
PLEASE HELP ME " i see a option apply update from sd and i dont have any signed files to do it please help me "
Note - i cant acces the phone to use clock work mode or pink screen then a connect usb to pc and a folder popup please dont give me <--- this solutions and i read so many threads and i dint get anything like mine "
Click to expand...
Click to collapse
clear wipe data and cache in android system recovery.
and reboot
http://forum.xda-developers.com/sitesearch.php?q=brick%20u8800

Did both but no use
nikosddesign said:
clear wipe data and cache in android system recovery.
and reboot
Click to expand...
Click to collapse
I did wipe data factory reset no use
i install the dload again ( update failed ) and this time i did both wipe data factory and wipe cache partition and No use
Please mention what are the signed files i can use in order to run " apply update from SD card "
Note i get the following when i do wipe data / factory reset
--wiping data...
formatting /cache...
E:failed to mount /data_pseudo ( no such file or directory )
E:failed to mount /data_pseudo ( no such file or directory )
formatting /data..
E:format_volume make _extf4fs failed on /dev/blocl/mmcblk0p13
E:failed to mount /data_pseudo ( no such file or directory )
E:failed to mount /data_pseudo ( no such file or directory )
Formating /HWuserData...
error opening disk files ( no such file or directory ) wipe internal sdcard fail
formatting /cahce
data wipe complete
i think it because the old custom partition was left and i dint have any chance to repartition it ( is ther a way to hard flash the phone and start all over please if yes guide me )

here http://forum.xda-developers.com/showthread.php?t=1728065
and here read carefoully http://forum.xda-developers.com/showthread.php?t=1560372&highlight=update+fail+on+step+2+of+2
flash this first have unlock pink screen http://www.mediafire.com/?nzygor314l4fk5u
flash this http://www.mediafire.com/?1hbk6n46hgamyt6
sorry my bad english.

thanks to you but i am not finished yet help plz
i checked all the links you gave and i found that i can do all this only if i have a rom installed in my system but my update failed and its like nothing is inside my mobile and partition is messed up and i am confused how will i flash this file ?
----------------------------------->flash this first have unlock pink screen ( the file you gave sorry cant post links me newbie )
1.i put the file sdcard / Dload then press + and - with powerbutton<--------------------------------> starts unpacking and update fails
but i get pink screen and image folder opens in windows
thank you so much for this help hugs and the problem is i cant partition it properly for installing a zip properly
i installed the u8800 official partition by geno but it doesn't take any effect after reboot .. my system partition is still messed up
please guide me what i do next do you have any partiton file which will take effect the moment i install its zip in clockwork mode
because when ever i run a rom zip after reboot it hangs on the rom logo not ( huawei logo )
and thank you again sir for the unlocking pinkscreen usb
Edit - when i try to do mount and storage in clockwork mode
format cache is ok
format system is ok
but when i format Data i get
E:format_volume: make_extf4fs failed on /dev/block/mmcbl0p13
error formating data
( i think my internal storage is messed up partition may be messeed up and thus no zip roms run after install all get stuck in logo )

It seems that you /data partition is damaged. You can try to format it from a linux machine. If you connect the device in pink screen mode on a linux system, you can see and other partitions(I think /data included). Then maybe you can format it from gparted for e.g)

dancer_69 said:
It seems that you /data partition is damaged. You can try to format it from a linux machine. If you connect the device in pink screen mode on a linux system, you can see and other partitions(I think /data included). Then maybe you can format it from gparted for e.g)
Click to expand...
Click to collapse
If you have pink screen you could make a restore from the full flash.bin, there is a tutorial in a thread on this forum, i unbricked mine this way.
Good Luck

I will try and get back to you all
i will try the linux full flash and let you all know if i was successful
EDIT- thanks for all the support i finally got it working back with the huawei full flasher in linux mode thank you so much

[Q] 0.00b free on /system after rooting

Dear all,
I tried to use link2sd on my S6102, so first I rooted it using this tutorial (which is linked in the link2sd tutorial):
http://forum.xda-developers.com/showthread.php?t=1611830
After applying update.zip, link2sd reports 0.00b on /system, thus the error message when starting link2sd:
"Mount script cannot be created. write: No space left on device.
Before applying update.zip, it was 1.4Mb in /system.
What does it mean? Did I do anything wrong?
BTW in this state, I tried to install the 15toggles package, which resulted in boot loop - had to restore nandroid backup via cwm. Maybe the same reason?
Thanks a lot!

To create a mount script you need a 2nd ext partition on your sd card - nothing to do with /system although you do need space there to place the script which I think is your problem
if you have got /system problems wipe Dalvik cache in cwm
if you still have problems You will have to wipe system & data and install a custom rom that is pre rooted

Yes 2nd partition is there and yes I think it is the script itself which doesn't fit in /system
Wiping dalvik cache did not change anything...
Maybe I can find another root "package" and try with that...

[Q] system partition corrupted (can't umount)

Just now after a reboot, I found that Google Play Service stops working. It happened quiet a few times before, so I decided to do what I always do - remove the Google Play Service and flash it again.
So I rebooted into recovery, removed gapps backup script under /system/addon.d using Aromafm, and tried to flash the latest CM nightly - and the flash failed with status 7.
Then I found that I can no longer boot into system, but I still have access to boot loader (fastboot) and recovery. So I begin to check what's wrong with my /system partition and found that once it's mounted, I can not umount it. At first I thought it's a file system problem so I tried to fix it with e2fsck - but I can't umount it so e2fsck won't work!
So I rebooted my phone again, executed e2fsck -cfy /dev/block/platform/msm_sdcc.1/by-name/system but it didn't show any error - it's like the file system is file but I just can't umount it for some reason I can not understand (If I try umount it, I'll get "invalid arguments")
Lucky enough there's nothing wrong with the secondary system partition (I have TDB enabled before and always been using system1) so I managed to flash the latest nightly to system2 and get my phone booted, but I still can't get access to system1
Anyone, help :crying:

Update
This is becoming weirder and weirder...
After a few days of usage, I did a lot modification to 2nd /system partition, I noticed that sometimes I got boot loop - if I connect the phone to my laptop and use adb logcat I can see the logcat loops forever. Using adb reboot can make my phone reboot and get into Android system.
So I powered off my phone, booted to recovery, and as I expected, the same thing happens to 2nd /system partition - it can be mounted with no problem, but I can not unmount it (except for power off the phone, of course)
I thought maybe there's something wrong with that partition, maybe bad block or whatever, so I copied the entire 2nd /system to 1st /system partition using dd - Then the 1st /system partition can't be unmounted as well.
Now I'm f_cked, so I decided to format 1st /system partition once again and start fresh, after format I went and try mount then unmount 2nd /system partition - now it can be successfully unmounted. I was shocked at the time that I thought something went wrong I acturally formatted both partitions, but turns out all data in 2nd /system partition is fine and the "can't unmount" issue is gone.
Now boot loop doesn't happen anymore, but I'm too afraid to do any more modifications to /system partition, therefore I have skipped a few nightly updates. I won't risk brick my phone until I can get my hands on a new one (It's just too hard to find a phone that has a great performance and not that freaking huge! Seriously, I would buy another Mi 2S if they still sell it.)
Does anyone know what could possibly happening here... I'm so confused...

E: Unable to mount on hard reset screen and while wipe in twrp. Phone stuck on logo

I'm a noob here. Below is the sequence of events.
1. I was already running on low internal storage (No external sdcard)
2. Phone switches off due to low battery
3. Switched on after a full battery and got this msg-"encryption unsuccessful with 'reset all' button"
4. After few restarts stuck at logo screen
5. Tried hard reset (for factory reset)- getting E: unable to mount cache recovery log
6. Tried wiping cache system dalvik data through twrp- getting unable to mount data system cache error
Tried changing filesystem to ext4 but that didnt work. Tried checking other threads but couldnt find a similar scenario.
Thanks!

defeated24 said:
I'm a noob here. Below is the sequence of events.
1. I was already running on low internal storage (No external sdcard)
2. Phone switches off due to low battery
3. Switched on after a full battery and got this msg-"encryption unsuccessful with 'reset all' button"
4. After few restarts stuck at logo screen
5. Tried hard reset (for factory reset)- getting E: unable to mount cache recovery log
6. Tried wiping cache system dalvik data through twrp- getting unable to mount data system cache error
Tried changing filesystem to ext4 but that didnt work. Tried checking other threads but couldnt find a similar scenario.
Thanks!
Click to expand...
Click to collapse
Ext4 is the default filesystem. Change it to fat and then revert back to ext4 again. It will repair your partition.

shivamgupta1996 said:
Ext4 is the default filesystem. Change it to fat and then revert back to ext4 again. It will repair your partition.
Click to expand...
Click to collapse
Tried doing that. I get a message-
E: Error changing file system
updating partition details...
E: unable to mount /system /cache /data
ONE MORE IMPORTANT THING- twrp shows internal storage as 0 MB and no OS installed.
I think I corrupted my partitions or something to do with encryption.

defeated24 said:
Tried doing that. I get a message-
E: Error changing file system
updating partition details...
E: unable to mount /system /cache /data
ONE MORE IMPORTANT THING- twrp shows internal storage as 0 MB and no OS installed.
I think I corrupted my partitions or something to do with encryption.
Click to expand...
Click to collapse
Which partition did you tried to change?

shivamgupta1996 said:
Which partition did you tried to change?
Click to expand...
Click to collapse
I tried cache and data partitions to fat from ext4.
Dalvik cache partition is something ghat is showing as- "file system options are not available for this partition"

defeated24 said:
I tried cache and data partitions to fat from ext4.
Dalvik cache partition is something ghat is showing as- "file system options are not available for this partition"
Click to expand...
Click to collapse
Change data or system partition. If system partition shows 0mb in details section after tapping on 'change or repair fs', then change fs of 'system' partition.
But if data shows zero, then change fs of 'data'.

shivamgupta1996 said:
Change data or system partition. If system partition shows 0mb in details section after tapping on 'change or repair fs', then change fs of 'system' partition.
But if data shows zero, then change fs of 'data'.
Click to expand...
Click to collapse
Both system and data partitions (and cache too) are showing 0mb size in details. I tried changing fs but arriving at the same error.
No matter what operation I try to do, i see unable to mount system data cache error lines coming up.

i am having same prblem i tried all this bt always got error unable to repair system data cache
i tried flashing qfil method not works still stuck on boot