I am trying to install a 300 gig Maxtor ATA Drive in a new Optiplex GX520 I have 2 gigs of ram installed and a 3.4 gig P4. When I try to install XP Pro SP2 on either a two partion or a single partion 300 gig drive it fails repatedly with an error saying a particular file is missing or corrupt. In checking the drives I find the file is there and is the same size as the file on the installation disk. If I try the install on a 3000K partition it fails with a file called ntoskrnl.exe....if I try installing on a single 289 gig partion it fails with a system file. I can install Pro on the 80 gig drive that came with the system without error. Updated BIOS to A05 (new on 11/7/2005) Anyone run into this kind of thing with Maxtor 300 gig ATA Drives? Excuse me while I go kick the dog.