I apologize. I didn't mean to dismiss it and was too terse (I'm often taking a break at work so I have to hit keys and run). But if DB gets a shell from a different boot area, it might not start up or have access to /root and /home and the other devices, at least without doing a lot of commands.
De nada, amigo. No problem. Yes, you have to run a few commands to get the "normal" root & home mounted, but they could be set into a shell for automation.
Better still, CF & SD cards automount, so one could put everything needed on a card & run totally independent of the NAND system.
(G) Yeh, I have to do the "type & run" myself (like today)! Understood.
Reboot holding D+B (you don't need to pull the batteries & flip the switch first; any reboot will do .. at least on my C860). Once the initital bootup white screen comes up, release the keys & you should get a black field at the bottom with boot info & then a login prompt. Just root & enter and youre running clean on console (G).
The commands to mount the "regular" root & home are somewhere in threads here, but I can summerize them if you want.
Hope this is of some help & use.