Didier Kryn writes:

>     For me the things which need to be protected are

>

>     1) the data
>     2) the OS, to avoid backdoors

>

>     I can't see any need to protect a motherboard against 
> booting from a "foreign" disk.

To access the data: Boot from foreign media, modify or replace the usual
boot partition so it looks right until it asks for the disk encryption
password, turn off the host, wait for the owner to turn it on and type in
the password, done.

Arnt