I was wondering if somehow either : the RAID device somehow makes the drive unbootable or somehow I've failed to successfully install lilo on the disk. Here's my lilo.conf (it's a Mandrake system): boot=/dev/hde map=/boot/map install=/boot/boot.b vga=normal default=linux-smp keytable=/boot/us.klt lba32 prompt nowarn timeout=100 message=/boot/message menu-scheme=wb:bw:wb:bw disk=/dev/hde bios=0x80 image=/boot/vmlinuz label=linux root=/dev/hde1 initrd=/boot/initrd.img append="devfs=mount hdc=ide-scsi" read-only image=/boot/vmlinuz-smp label=linux-smp root=/dev/hde1 initrd=/boot/initrd-smp.img append="devfs=mount hdc=ide-scsi" read-only image=/boot/vmlinuz-smp label=linux-smp-old root=/dev/hde1 initrd=/boot/initrd-smp.img append="devfs=mount hdd=ide-scsi" read-only image=/boot/vmlinuz-enterprise label=linux-enterpris root=/dev/hde1 initrd=/boot/initrd-enterprise.img append="devfs=mount hdc=ide-scsi" read-only image=/boot/vmlinuz label=failsafe root=/dev/hde1 initrd=/boot/initrd.img append="failsafe devfs=nomount hdc=ide-scsi" read-only other=/dev/fd0 label=floppy unsafe image=/boot/vmlinuz-2.4.18-6mdksecure label=2418-6sec root=/dev/hde1 read-only optional vga=normal append=" initrd=initrd.img" initrd=/boot/initrd-2.4.18-6mdksecure.img