ATT 3b2 firmware password

[John Kullmann]

In article <3900001 at snail> carroll at snail.CS.UIUC.EDU writes:
>or yank the power cord (which
>is pretty much guaranteed to trash the file system). 

Are you telling me that if I type 'sync' (and there are no
other users) and wait until the disk stops thrashing and then
pull the plug the file system will be trashed?!?!??!?!?

I'd like to know what extra work was done to the 3B2 to get
this effect.