How would one edit the config files?
In the debian6-19-04-2012.zip image, there is the cmdline.txt config file (absent from the firmware boot folder on git) which contains:
dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 rootwait
If files are moved to first partition of USB drive (ext4), would it be as simple as replacing with root=/dev/sda1p1 ?
EDIT: Answering myself, it seems /dev/sda1 is correct