Root on SD Card
From wiki.gp2x.org
GP2X: root on SD Card
After a bit of fiddling theoddbot has created a kernel that can use the 2nd partition of the SD card (formatted as ext2) as the root filesystem. This is a great way to mess around with the gp2x filesystem without fear of rendering your gp2x unbootable
Requires art103's u-boot.
- Create a 2nd partition on your SD card and format it as ext2.
- Mount the new partition on your host.
- Extract the image.tar.gz file into this new partition, removing the image/ part. so image/sbin becomes /sbin and so on
- Copy kernel.img to the 1st (vfat) partition of your SD card.
When you boot this kernel the root filesystem will be /dev/mmcsd/disc0/part2
ps. Don't take your SD card out :)
Download the files from here.