http://www.mobileread.com/forums/showthread.php?t=244000 https://www.dropbox.com/s/8pfqgriu85miz7i/2014-08-07_Android_Kobo_Touch_public.7z
https://pan.baidu.com/s/1jG44Mxw#path=%252FDebianAndroid-DualBoot debian-android.8GiB.raw.img.7z
16G sd card with partition table p1 contains linux (taken from the debian-android image for the aura) p2 contains android system (taken from the kobo touch image Marek Gibek provided) p3 contains android data (taken from the kobo touch image Marek Gibek provided) p6 contains vfat partition (taken from the kobo touch image Marek Gibek provided)
/dev/mmcblk1p1 19456 12600000 12580545 6G 83 Linux /dev/mmcblk1p2 12600001 14500000 1900000 927.8M 83 Linux /dev/mmcblk1p3 14500001 18500000 4000000 1.9G 83 Linux /dev/mmcblk1p4 18500001 31275000 12775000 6.1G 5 Extended /dev/mmcblk1p5 18503680 19500000 996321 486.5M 82 Linux swap / Solaris /dev/mmcblk1p6 19503104 31275000 11771897 5.6G b W95 FAT32
partition-table-linux.txt (provided in this repository) sfdisk -f /dev/mmcblk1 < /usr/src/partition-table-linux.txt
To switch between android and linux, I execute a script which writes an image to the first 19456 blocks (linux-boot.img and android-boot.img can be found in this repository)
(under android open terminal and su root) /Android Data/data/boot-linux dd if=linux-boot.img of=/dev/block/mmcblk0 ---mounting vfat--- mount /dev/block/mmcblk0p6 /mnt/sdcard
linux (execute as root password root) under /root/androidboot dd if=android-boot.img of=/dev/mmcblk0