Trio7C, Corrupted Partition Table?

Discussion in 'Android Tablet Q&A' started by checkbit, Oct 17, 2013.

  1. checkbit

    checkbit Member

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    Hello All,

    I hope I have come to the right place. I've played around with *nix for years but this is my first foray into droids and I am stumped. I have a Trio7c (v. 4.0.4 ) which is a clone of the LY-F1. I've really enjoyed it especially for the price until now. :) These tablets came in several different builds and I think I have one that runs on AllwinnerA13 firmware but I haven't verified that. It comes rooted but without Google Store on it so I installed that. This model has a reset pin hole on the side in between the usb port and the headphone jack. It comes from the factory set so it will not boot into recovery mode manually. Online, I have found a half a dozen ways to go into recovery mode and none of them work. While it did work for a while after installing GS, one evening I left it on and when I woke up it had completely reset with the exception of GS it was factory fresh. Only now any apk install throws an out of space error. It is recognized by XP and I can get a shell through QtADB, I can also push a couple of apks (root explorer and a terminal emulator) from QtADB but that is the only way to get anything on the tablet. All other install attempts throw the out of space error so i have yet to find a partition editor that I can push onto the tablet.

    SO! The System Settings Storage GUI shows 0.00B total available space with 40.04MB taken up by apps. DF tells a different story:

    Filesystem Size Used Free Blksize
    /dev 176M 44K 176M 4096
    /mnt/asec 176M 0K 176M 4096
    /mnt/obb 176M 0K 176M 4096
    /system 377M 273M 104M 4096
    /mnt/extsd 14G 9G 5G 32768
    /mnt/sdcard 1G 915M 831M 4096
    /mnt/secure/asec 1G 915M 831M 4096
    /mnt/asec/com.speedsoftware.rootexplorer-1 2M 228K 1M 4096

    I've been chasing a solution for days now and am hesitant to hack too much on it since I can't just feed it an iso disk and start over...... I am starting to think it would make a pretty good target though.

    Any insight or guidance will be greatly appreciated and thanks for taking the time to read my long winded babble.
     
  2. Spider

    Spider Administrator Staff Member

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    Hello checkbit, congratulations on your Trio7c and welcome to the forum. Nice to have you as a member of Android Tablets. I'm moving your thread to the Android Tablet Q&A section for you, where more people are likely to join the discussion and try to help you. Good luck!
     
  3. vampirefo.

    vampirefo. Senior Member Developer

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    You don't have data or cache partitions, meaning you can't install apps, this is your problem, you need to factory reset.

    using adb should get you into recovery


    Code:
    adb shell
    
    su
    
    echo -n boot-recovery | busybox dd of=/dev/block/nandf count=1 conv=sync; sync; reboot
    
    also use busybox df -h to get a better look at your mounted partitions.

    example of my a10 results.
    Code:
    root@android:/ # busybox df -h
    Filesystem                Size      Used Available Use% Mounted on
    tmpfs                   407.1M     84.0K    407.1M   0% /dev
    tmpfs                   407.1M         0    407.1M   0% /mnt/asec
    tmpfs                   407.1M         0    407.1M   0% /mnt/obb
    /dev/block/nandd        503.9M    317.5M    186.5M  63% /system
    /dev/block/nande       1007.9M    197.8M    810.1M  20% /data
    /dev/block/nandh        503.9M      8.4M    495.6M   2% /cache
    /dev/block/vold/93:64
                              5.3G    256.0K      5.3G   0% /storage/sdcard0
    /dev/block/vold/93:64
                              5.3G    256.0K      5.3G   0% /mnt/secure/asec
    
    
     
    Last edited: Oct 17, 2013
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  4. checkbit

    checkbit Member

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    Thank you for that information. I'll try it this evening and post the results. Thanks again!
     
  5. checkbit

    checkbit Member

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    vampirefo. - Your answer put me on the right path. I verified it's a A13 and used CWM to toss Cyanogen on it. I'm about to take it through it's paces. Thanks!
     

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