[NTLUG:Discuss] GRUB and USB drives.

[Steve Baker]

I have an HP laptop with WinXP - and I'm not supposed to 'mess it up' by 
installing Linux onto it - but I have a 300Gb USB drive, so I'd like to
boot Linux from that instead.

The BIOS lets me hold down the ESC key during startup - and to select
"boot from USB"...so this sounds do-able.

I installed SuSE 10.2 on the USB drive - but GRUB tried to write to the
laptop's internal drive instead...and that's a "No No".

I can't figure out what to tell GRUB to make it install a boot loader
onto the USB drive that'll boot from the USB drive.  I can boot from a 
SuSE Live-CD and run grub - but I can't figure out what to tell it.

The USB drive mounts as /dev/sda1  (system partition) and /dev/sda3
(user partition).  Both are formatted 'Linux Native'.  The "must not 
touch" hard drive is /dev/hda

Help!  Thanks!