Am Montag, den 14.12.2009, 22:16 +0000 schrieb Adrian Wilkins:
> And I right in saying that the device that grub boots is identified by
> UUID and the device that it installs grub to is identified by a path
> in
> /dev  ?
> 

The GRUB device which gets used during boot is only searched with UUID
if you don't install to the disk which contains your /boot/grub.
Else the partition number gets hardcoded and drive number is read from
BIOS.
The script grub-install supports actually both, a GRUB device and an OS
one, i.e. /dev/XXX
But it's not recommended to use a GRUB device because that totally
depends on /boot/grub/device.map and that could be completely wrong.
-- 
Felix Zielcke
Proud Debian Maintainer and GNU GRUB developer

-- 
update to grub-pc writes MBR without checks, prompt or backup
https://bugs.launchpad.net/bugs/495423
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