OSD booting from USB mass storage

[Fernando Cassia]

I remember that whoever designed the "new" firmware allowing
read-write from Compactflash talked about booting from USB as a
possibility.

The question is simple: would it be possible for one OSD to have a
"stop gap" boot code (grub?) that then boots from USB mass storage as
the root partition with r/w privileges?.

Thanks,
FC