While transplanting the Coffeecam to new hardware I made a copy of the entire system to a different (more silent) harddisk. The next problem was getting grub to install itself on that second harddisk. Which was easy, given the hints on a Software RAID Howto. Grub does not complain when I tell it /dev/hdc will be the future (hd0). This is something that would be a lot more trouble to get right in lilo.