/etc/lilo.conf:
disk=/dev/sda
bios=0x80
disk=/dev/sdb
bios=0x81
vga=0x317
map="/boot/map"
lba32
prompt
timeout=100
install="menu"
default="ALTLinux"
append=""
boot="/dev/md1"
raid-extra-boot="/dev/sda,/dev/sdb"
image="/boot/vmlinuz"
label="ALTLinux"
initrd="/boot/initrd.img"
root="/dev/md1"
read-only
image="/boot/vmlinuz"
label="NORAID"
initrd="/boot/initrd-2.6.18-std-smp-alt4.img"
root="/dev/sda1"
read-only
image="/boot/vmlinuz"
label="failsafe"
initrd="/boot/initrd.img"
root="UUID=a5f7fa8f-223f-4cd5-8f4d-59b4d7d72228"
addappend="failsafe"
vga="normal"
read-only
[root@obelix /]# lilo
Fatal: Not all RAID-1 disks are active; use '-H' to install to active disks only
[root@obelix /]# lilo -H
Warning: Partial RAID-1 install on active disks only; booting is not failsafe
Warning: Faulty disk in RAID-1 array; boot with caution!!
Warning: device outside of RAID set /dev/sda 0x0800
Warning: device outside of RAID set /dev/sdb 0x0810
Fatal: Unusual RAID bios device code: 0xFF