Ok, I got the latest HOWTO. I am right in the middle of doing the old way of making /dev/md0 and /dev/md1 so I hope you don't mind me asking about the old way, before jumping into the new way. Anyway, I want /var on /dev/md0 and /home on /dev/md1 I created a /etc/raid/raid1.conf and it looks as if everything went through ok on the # mkraid /etc/raid/raid1.conf but when I try to do # mdrun -p1 /dev/md0 I get mammoth:/usr/doc/raidtools/examples# mdrun -p1 /dev/md0 raid1: detected mirror differences -- run ckraid /dev/md0: Input/output error Did I properly specify my raid1.conf? Below is what I currently have brian $ cat /etc/raid/raid1.conf raiddev /dev/md0 raid-level 1 nr-raid-disks 2 nr-spare-disks 0 device /dev/sda9 raid-disk 0 device /dev/sdb9 raid-disk 1 raiddev /dev/md1 raid-level 1 nr-raid-disks 2 nr-spare-disks 0 device /dev/sda10 raid-disk 0 device /dev/sdb10 raid-disk 1 -- Brian Lavender http://www.brie.com/brian/