I have a Dell server that has a (DELL) CERC ATA100/4ch IDE RAID controller in it. I have (2) 30GB Western Digital Drives on the (DELL) CERC ATA100/4ch IDE RAID controller as RAID 1 (mirroring) which boots. I used a program called Acronis to clone 1 of the 30GB WD drives to an 80GB WD drive. I tested the cloned 80GB drive to see if it would boot on of the MOBO BIOS Channel 0 Primary IDE and it works fine. It IS a bootable drive. My problem is I do not know how to configure the (DELL) CERC ATA100/4ch IDE RAID controller with the new 80GB drive and an indentical one for RAID 1 Mirroring and have it boot successfully. Everything appears to be online and under RAID 1 in the (DELL) CERC ATA100/4ch IDE RAID controller, but I cannot get it to boot off that. I even set the proper boot drive in the (DELL) CERC ATA100/4ch IDE RAID controller config. If I mess with it too much it wipes out the drive partitions and I have to reclone from the original 30GB. Why can't they make it so you can automatically take an existing bootable drive with data on it and put it into a RAID 1 mirroring array so that the second drive will just copy the 1st and you can go about your day. I am just trying to take my cloned bootable 80GB drive and put in on this (DELL) CERC ATA100/4ch IDE RAID controller along with an identical 80GB drive and have this thing boot with my existing OS in RAID1 mirroring mode. Please help. This is driving me crazy!