Installing RAID level 1 on 2 IDE drives with Slackware
(This is from The Software-RAID HOWTO by Jakob Østergaard and Emilio Bueso.)

• Create 2 same-size ext2 partitions
• Set up /etc/raidtab something like this:

        raiddev	/dev/md0
        raid-level	1
        nr-raid-disks	2
        chunk-size	32
        persistent-superblock	1
        device	/dev/hda2
        raid-disk	0
        device	/dev/hdc1
        raid-disk	1
        

• Use mkraid to write the RAID signature to the new device

            mkraid /dev/md0
          

• Now, we need to wait for the drives to mirror. Use mdstat to watch:

            cat /proc/mdstat
          

• Once the drives are fully mirrored, we can create our filesystem:

            mkfs -t ext2 /dev/md0
          

• Now we need to stop the RAID array and finish setting up:

            raidstop /dev/md0
          

• Use fdisk to toggle both partitions to type 'fd' (Linux RAID)
• Finally, you probably want to mount this at startup, so put it in /etc/fstab:

            /dev/md0	/home	ext2	defaults	1 2
          

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