### refer to Boot+Root+Raid+LILO-mini-HOWTO, Software-RAID HOWTO
### This micro-HOWTO assumes 1 swap and 1 main partition on each disk
 
compile & install kernel with RAID support
install raidtools2
install identical 2nd disc
partition to match existing disk
	- may require some tinkering if disk geometries are different
	- root/boot partition(s) should be type "fd" for raid autostart
mkswap {swap partition}
create or copy /etc/raidtab -- edit to suit
	- mark existing disk as failed so raid only uses the newdisk at first
mkraid /dev/md0
mke2fs (-j if ext3) /dev/md0
mount /dev/md0 /mnt/newdisk
telinit 1
cp -ax / /mnt/newdisk
edit /mnt/newdisk/etc/fstab
	- replace entries for root/boot partition with /dev/md0
	- make sure there are entries for swap on both devices 
make bootdisk
    cat /vmlinuz > /dev/fd0
    rdev /dev/fd0 /dev/md0
    rdev -r /dev/fd0 0
    rdev -R /dev/fd0 1
reboot from floppy
fdisk old disk to change root/boot partition to "fd" for raid autostart
edit /etc/raidtab to change failed-disk to raid-disk
raidhotadd /dev/md0 {original_partition}
    wait for reconstruction to finish
    watch -n 1 cat /proc/mdstat
edit /etc/lilo.conf
    boot = /dev/md0
    root = /dev/md0
    raid-extra-boot = /dev/hdc, /dev/hda
lilo
reboot from raid