Rootfs.cramfs.secure

From ArchosDocs

You can get this file from the hidden partition. The file is prefixed by a 256 bytes header, you can mount the file as a loop device with the following command:

mkdir rootfs
mount -t cramfs -o loop,offset=256 rootfs.cramfs.secure rootfs/

Some files of interest:

• /etc/fstab
• /etc/inittab - Starts the init.d scripts, and then avos_helper.sh
• /usr/bin/avos_helper.sh - Starts avos and reboot the unit immediately after it quits
• /usr/bin/avos - The avos binary