Now to the list instead of the poster
Scarletdown schreef:
I just purchased an external USB drive in hopes that I could toss an XP
build on it real quick without messing with everything on the internal
drives (friends wanting me to try Lord of the Rings Online which doesn't
work with Cedega is one of the reasons...)
...
So it's obvious that GRUB can see external USB drives. However, it is
not visible to GRUB there at boot time. Is there any way to force GRUB
to actually see external drives?
Can you check the contents of /boot/grub/device.map? I think you need to
make sure your usb device is mentioned there for it to work at boot
time. If it is not there, redo update-grub and check if the usb drive is
added to device.map. If so, do a grub-install and then things should work.
Sjoerd