Ok /dev/mmcblk0p1 seems to be still there and is fat32. Now I think(90% sure) it's a case of filesystem corruption. Please try running this command from xterm fsck.vfat -a /dev/mmcblk0p1 Note this will run for a very long time so stick it to your charger and let it finish after it's done restart your phone and check if MyDocs is back.