>>>>> It might be easier to swap the old sdb into the sda position so >>>>> you'll boot from it, but you should also be able to boot the install >>>>> cd with >>>> >>>> If swapped and booted, and got a kernel panic error. >>> >>> What does it complain about? >> <snip> >> mounting root filesystem cfs: can't find ext3 filesystem on dev md2 >> mount: error 22 mounting ext >> mount: error 22 mounting none switching to new root switchroot: mount >> failed: 22 unmount /initrd/dev failed: 2 >> Kernel panic - not syncing: attempted to kill init! > > From the rescue mode boot, can you mount either /dev/md2 or the > underlying /dev/sd?2 from either of the disks. If not, the raid isn't > your problem, it is the contents of the partition. # mount /dev/md2 /mnt/part3 mount: Mounting /dev/md2 on /mnt/part3 failed: Invalid argument