I set up raid level 1 with two 30 Gig drives on a new install. I select "fill to maximum capacity"on each drive and mounted it at / . Everything looked as I expected before moving on with the install. The box boots and runs fine, and I can see in the system logs that /dev/md0 is created using hda1, and hdc1. I can pull hdc1 and the box boots fine without any errors or complaining. If I pull hda1 I get a "missing operating system error". I am expecting to see the box boot with either one of the drives pulled. Any advise would be appreciated. Raymond