i currently have a two systems running kernel v 2.4.18 and have raid support. i have found a howto on getting raid1 working on pre-existing system but when i tried it, i messed up my boot sector. i was able to recover but i do not wish to do this again. i am pretty confised as to how to straighten this out. any help is appreciated!! right now, my configuration is as follows: > mdadm -D /dev/md0 /dev/md0: Version : 00.90.00 Creation Time : Tue Dec 14 18:14:03 2004 Raid Level : raid1 Array Size : 40021568 (38.16 GiB 40.98 GB) Device Size : 40021568 (38.16 GiB 40.98 GB) Raid Disks : 2 Total Disks : 2 Preferred Minor : 0 Persistance : Superblock is persistant Update Time : Thu Dec 16 06:40:04 2004 State : dirty, no-errors Active Drives : 2 Working Drives : 2 Failed Drives : 0 Spare Drives : 0 Number Major Minor RaidDisk State 0 3 0 0 active sync /dev/hda 1 22 0 1 active sync /dev/hdc UUID : e5dd4d59:8c468e45:01ae5099:8a1ee740 > df -h Filesystem Size Used Avail Use% Mounted on /dev/hda7 9.2G 2.1G 6.7G 24% / /dev/hda1 31M 12M 18M 41% /boot /dev/hda6 19G 6.7G 11G 39% /home /dev/hda8 9.6G 1.2G 8.0G 13% /var > fdisk -l /dev/md0 Disk /dev/md0: 2 heads, 4 sectors, 10005392 cylinders Units = cylinders of 8 * 512 bytes Device Boot Start End Blocks Id System /dev/md0p1 * 8 8033 32098+ 83 Linux Partition 1 does not end on cylinder boundary: phys=(3, 254, 63) should be (3, 1, 4) /dev/md0p2 8033 10004479 39985785 5 Extended Partition 2 does not end on cylinder boundary: phys=(1023, 254, 63) should be (1023, 1, 4) /dev/md0p5 8041 132537 497983+ 82 Linux swap /dev/md0p6 132545 5016297 19535008+ 83 Linux /dev/md0p7 5016305 7458177 9767488+ 83 Linux /dev/md0p8 7458185 10004479 10185178+ 83 Linux > fdisk -l /dev/hda Disk /dev/hda: 255 heads, 63 sectors, 4982 cylinders Units = cylinders of 16065 * 512 bytes Device Boot Start End Blocks Id System /dev/hda1 * 1 4 32098+ 83 Linux /dev/hda2 5 4982 39985785 5 Extended /dev/hda5 5 66 497983+ 82 Linux swap /dev/hda6 67 2498 19535008+ 83 Linux /dev/hda7 2499 3714 9767488+ 83 Linux /dev/hda8 3715 4982 10185178+ 83 Linux > fdisk -l /dev/hdc Disk /dev/hdc: 255 heads, 63 sectors, 4998 cylinders Units = cylinders of 16065 * 512 bytes Device Boot Start End Blocks Id System /dev/hdc1 * 1 4 32098+ 83 Linux /dev/hdc2 5 4982 39985785 5 Extended /dev/hdc5 5 66 497983+ 82 Linux swap /dev/hdc6 67 2498 19535008+ 83 Linux /dev/hdc7 2499 3714 9767488+ 83 Linux /dev/hdc8 3715 4982 10185178+ 83 Linux ---------------------------------------------------------------------- Zero Crossings, Inc. -- Embedded and Digital Signal Processing Systems http://www.zerocrossings.com/ - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html