I have 4 IDE disks in a existing system that I want enable software RAID level 1 for. Disk 1 will be mirrored to disk 2, disk 3 will be mirrored to disk 4. Disk 1 has already been partitioned (hda1-4) with SuSE 8.1 installed running off the mainboard's IDE controller #1 and disk 2 is on controller 2 respective. Disks 3 & 4 are running on a Promise ATA-100 IDE Controller card. I do not use LVM. I attempted to use yast to enable raid 1 but it tells me at least 2 partitions need to belong to /dev/md0 but only the hdc raid partitions show in the add/remove area. Attempting to change the FD from 0x83 (linux native) to 0xFD (raid) of the hda disk partitions gives me a nice warning that doesn't make me feel warm and fuzzy about doing the operation. Here is the partition scheme of disk 1 (hda) /boot ext2 109MB (or ext3 ... cant remember) /home reiserfs 5GB swap swap 4GB / reiserfs ~111GB hdc, hdi & hdk are all empty and unpartitioned. All disks are running on their own controller. Should I simply boot into rescue mode and change the FDs from their and then go back and rerun yast to finish the deed or is it more complicated? Thanks, Kevin