Hi, I have setup raid on a new server and have found that if I remove one drive it will boot but if I remove the other it says missing OS. I am using two 18.2Gig SCSI drives, using software raid 1. I have it setup with the following drives in this order. /boot swap / all are mirrored between the two drives. I remember a while back that their was a problem with grub would that be the problem here? Why does it work on one drive and not the other? Thanks Mace