I have been struggling with successfully installing Arch Linux on my PC with just two S-ATA drives. I am using the LiveCD / Netinst "2009.08". The only partition I want for RAID is simply /home. I have two identical disks and am partition as follows: /dev/sda1 = 2048 (bootable) */boot* /dev/sda2 = 40960 */* /dev/sda3 = 102400 *RAID* /dev/sdb1 = 2048 *Swap* /dev/sdb2 = 40960 */var* /dev/sdb3 = 102400 *RAID* Then I create the RAID after I run "cfdisk" utility: mdadm --create --verbose /dev/md0 --level=1 --raid-devices=2 /dev/sda3 /dev/sdb3 Once that is done, I run "/arch/setup command from the comand prompt and enter the system installer as normal. I have simply already created my disks, all I do from the installer now is assign a file system and mount point. It recognizes the RAID /dev/md0 partition I created using mdadm utility. Everything is fine but when I install Grub on /dev/sda and reboot the machine, I always fail to boot. I get some strange error that tells me to type "Control-D" for maintenance mode or something like that. If I do everything like I did above but don't create a RAID partition, Arch installs perfect! What am I doing wrong? The Arch Wiki is not helping me at all. I have spent a week trying to follow the Wiki with help from the forums and to no avail I have given up. I can't see this being that hard. I think I bork something up when I install Grub but I get no errors and it tells me I installed Grub successfully on /dev/sda. http://bbs.archlinux.org/viewtopic.php?id=80776 Thanks for any help in getting me a working Arch Linux system with RAID.