Here's a useful tip, I guess, if you need to access to the internal NAND from a GNU/Linux Distro installed on a USB HDD/Key or SD/MMC Card :
Create a Directory like:
Mount the NAND in this directory:
mount -t jffs2 /dev/mtdblock2 /media/nand -o ro
So if you forgot some files in your old Ubuntu 9.04 install, you'll be able to save them !
Made with Debian installed on an external USB HDD (500 Go).