Greetings, I'm (somewhere) in the middle of upgrading from non-raid to RAID1. I'm using RH6.2 on a dual PIII-450s w/ 2 Barracuda 20GB Seagates (with minutely different geometries). Looking at Section 4 of "the Boot + Root + Raid + Lilo : Software Raid HOWTO" I've gotten up to 4.5 - "Test your new RAID" Where my procedure seems to choke is on the modification of the /etc/fstab file. Is the ordering of the mounts important in this file. Should the /dev/mdx's which are equivalent to the / and /boot filesystems, respectively, be the first ones to be mounted? Are there other issues for which to watch at this step? Thanks in advance! Max Pyziur BRAMA - Gateway Ukraine [EMAIL PROTECTED] http://www.brama.com/ ############################################################### Some relevant information: Once I recovered I had the following from looking at /proc/mdstat # cat /proc/mdstat Personalities : [raid1] read_ahead 1024 sectors md1 : active raid1 hdb1[0] 24000 blocks [2/1] [U_] md6 : active raid1 hdb9[0] 88256 blocks [2/1] [U_] md5 : active raid1 hdb8[0] 88256 blocks [2/1] [U_] md4 : active raid1 hdb7[0] 3076352 blocks [2/1] [U_] md3 : active raid1 hdb6[0] 160512 blocks [2/1] [U_] md2 : active raid1 hdb3[0] 6104576 blocks [2/1] [U_] md0 : active raid1 hdb2[0] 10241344 blocks [2/1] [U_] unused devices: <none> and my df-k (once I remounted everything) # df -k Filesystem 1k-blocks Used Available Use% Mounted on /dev/hda9 124427 46392 71611 39% / /dev/hda1 23302 7623 14476 34% /boot /dev/hda8 155545 12365 135150 8% /home /dev/hda2 10080520 178056 9390396 2% /opt /dev/hda6 155545 37 147478 0% /tmp /dev/hda7 3028080 480812 2393448 17% /usr /dev/hda3 6008756 16088 5687436 0% /var /dev/md6 85460 11607 69441 14% /mnt/raid1 /dev/md0 10080428 20 9568344 0% /mnt/raid1/opt /dev/md1 23239 5384 16655 24% /mnt/raid1/boot /dev/md2 6008632 15096 5688308 0% /mnt/raid1/var /dev/md3 155439 13 147401 0% /mnt/raid1/tmp /dev/md4 3028016 464644 2409556 16% /mnt/raid1/usr /dev/md5 85460 12364 68684 15% /mnt/raid1/home