I found a message which seems to suggest a fix for syncing the boot RAID-1 partition after an installing grub or updating grub when it is on a RAID-1 partition... http://lists.centos.org/pipermail/centos/2005-April/004641.html Worse yet I find that by aborting the installation now my RAID-1 is degraded... /sbin/mdadm --query --detail /dev/md0 /dev/md0: Version : 00.90.01 Creation Time : Tue Jun 1 07:10:21 2004 Raid Level : raid1 Array Size : 104192 (101.75 MiB 106.69 MB) Device Size : 104192 (101.75 MiB 106.69 MB) Raid Devices : 2 Total Devices : 1 Preferred Minor : 0 Persistence : Superblock is persistent Update Time : Thu Jul 14 17:12:51 2005 State : clean, no-errors Active Devices : 1 Working Devices : 1 Failed Devices : 0 Spare Devices : 0 Number Major Minor RaidDevice State 0 0 0 -1 removed 1 8 1 1 active sync /dev/sda1 UUID : 14fa39c9:9e771c90:75bc4ee3:3d25b07e Events : 0.4399 [root@graphics howarth]# cat /proc/mdstat Personalities : [raid1] md1 : active raid1 sda2[1] 30716160 blocks [2/1] [_U] md2 : active raid1 sda3[1] 3068160 blocks [2/1] [_U] md3 : active raid1 sda5[1] 2048000 blocks [2/1] [_U] md4 : active raid1 sda6[0] 81280768 blocks [2/1] [U_] md0 : active raid1 sda1[1] 104192 blocks [2/1] [_U] unused devices: <none> So I had been fix my RAID-1 before reattempting the upgrade. I am starting to wonder if I would have been better off using yum to try to upgrade. Blah. Jack
