Acer A200 - BRICKED, cannot mount /data /sdcard

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By j_medved, Junior Member on 27th July 2012, 02:59 AM
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I did something stupid. Got an A200 that could not get OTA 4.0.3, so I managed to get it updated manually. However, I then proceeded to try to root it using the "SimpleRoot" scripts on Acertabletforum, and at this point, the thing is bricked. In Recovery, I cannot get anything to mount. /SDCard, /data, etc

Bootloader is Unlocked
I tried with some different Recoveries with slightly different results:
1) Hbwelch CWM v5.5.0.4 (the one that comes with SimpleTool) - All mounting attempts fail
2) nics-TWRP_stable (twrp v 2.1.4) - Seems to be able to mount System and Cache, but not DATA or SDCARD (Internal or External)
3) thor v 5.5.0x (thor2002ro rev1.7) - errors mounting data, sdcard and /mnt/sdcard. Is able to mount system, cache, flexrom and flex.

Any idea how to fix it? I am afraid that if I try to return the tablet where I bought it as it is now, it will get rejected. (even though the damn thing was supposed to be ICS upgradable in the first place, but wasn't... long story)

Thanks

Jerry
28th July 2012, 08:07 PM |#2  
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I finally got the tablet working again. Was very close to sending it back. Got bits and pieces of info from various other posts on this forum and on acertabletforum. For the sake of anyone else that may find this thread, here are a few things that were wrong, and how to fix them

(I cannot post outside links, so just google the file names when relevant)

1) /SDCard would not mount. Solution - PARTITION the SD card. NOTE: The card worked on a PC, and even on that tablet when Android was fully booted. However it would NOT mount in recovery until I explicitly partitioned it. Doing a FORMAT on the PC does NOT count. I had to partition it within Recovery.

NOTE: This may also be why people are unable to get the update.zip thing working.

2) /Data would not mount - I have no idea how this got screwed up, but the solution was:
* Connect the tablet to the PC in RECOVERY. At this point, ADB should work. If not, check the drivers on the PC - I had to manually specify the Acer ADB Composite driver.

* Open a Command prompt window

* Start ADB shell by typing:
ADB SHELL

* Now execute the following:
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. (solution posted by spoupard on XDA-Developers.com)

3) Putting it all together:
* Flashed the BOOT partition with Honeycomb 3.2.1_boot.img
* Flashed the RECOVERY partition with nics-TWRP_stable.img

* At this point, I noticed that the Bootloader was once again LOCKED. So, start into FASTBOOT mode and execute the following from the command prompt again:
fastboot oem unlock

* Re-Start in Recovery and select MOUNT and make sure that everything is mounted. If /SDCARD or /DATA refuse to mount, fix that issue first (step 2 above)

* Now I select to INSTALL Acer_AV041_A200_1.037.00_PA_CUS1.zip

Upon reboot, I noticed that it said "Updating Bootloader", then got the Acer screen and locked up. I restarted again into Recovery and again selected the option to install INSTALL Acer_AV041_A200_1.037.00_PA_CUS1.zip and reboot. This time it restarted, indicated that it has a new version of bootloader (previously was 3.1.3) and proceeded to boot up into Android 4.0.3. At that point, I think my neighbors heard me scream YES!, considering I spent 2 days on this

I hope I got all the steps. Most of it is from memory and some notes, since I did not want to experiment and go through this hell again.

Jerry
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29th July 2012, 05:33 AM |#3  
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Great info but you might want to add fixed to the title. For the time being doesn't look like I will be rooting till these issues are sorted out. I am see too many people saying they are bricking with this root method.
29th July 2012, 06:07 AM |#4  
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FIXED - Acer A200 - BRICKED, cannot mount /data /sdcard
Quote:
Originally Posted by agapecs

Great info but you might want to add fixed to the title. For the time being doesn't look like I will be rooting till these issues are sorted out. I am see too many people saying they are bricking with this root method.

Didn't see a way to edit the title. As for rooting, note that after all was said and done, I am still not rooted. I just managed to get updated to 4.0.3, which should have been done OTA anyway. I may try again now that I am a bit more confident that I can get it back to working state, but will do a full backup in ADB first. Too much of a pain in the *** to have to reconfigure everything again once the OS is installed.
21st August 2012, 09:11 AM |#5  
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I cannot get the device to connect to my PC at all, or get the correct driver selected. Any tips?
21st August 2012, 01:38 PM |#6  
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Quote:
Originally Posted by crazyjimbo

I cannot get the device to connect to my PC at all, or get the correct driver selected. Any tips?

what state is the tablet in when you try to connect? Fastboot, Recovery, or fully booted up and operating?
What do you see in the device manager when the tablet is connected?
25th August 2012, 01:33 PM |#7  
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ext3 oder ext4?
1) /SDCard would not mount. Solution - PARTITION the SD card. NOTE: The card worked on a PC, and even on that tablet when Android was fully booted. However it would NOT mount in recovery until I explicitly partitioned it. Doing a FORMAT on the PC does NOT count. I had to partition it within Recovery.

Try to do this with twrp v.2.1.4: do I use ext3 or ext4 for the Partition? And which size needs the ext Partition?

Thanx
teacherHH
25th August 2012, 05:12 PM |#8  
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Quote:
Originally Posted by teacherhh

[B]Try to do this with twrp v.2.1.4: do I use ext3 or ext4 for the Partition? And which size needs the ext Partition?

Don't think it matters. I picked the defaults.
25th August 2012, 08:40 PM |#9  
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mke2fs -j -b 4096 /dev/block/mmcblk0p8
Thanx j_medved for yor reply!

So I did and just faced the next problem: I can conect my Tablet to the PC and can finde it with adb devices and can start the shell with adb shell.
But then when I start: mke2fs -j -b 4096 /dev/block/mmcblk0p8
nothing seems to happen....waited about 30 minutes....
in the next turn I get the reply, that mmcblk0p8 is allready in use....next turn again: nothing seems to happen....

any ideas? .-(

teacherhh
25th August 2012, 08:48 PM |#10  
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teacherhh,

If I remember correctly, that command should finish pretty quick. You may want to try leaving it for a bit longer, but it seems that you may have something else wrong. I am not that familiar with this area. Haven't dealt with Linux much. Sorry.
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25th August 2012, 08:54 PM |#11  
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Okay. Thanx anyway!


Sent from my GT-I9300 using xda app-developers app
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