I recently installed a WD 500G sata drive. First thing I did, using Partition Magic, was to format the drive then make 4 various sized partitions with the first being the system of around 30G. Make sure the narrow flat wire is plugged into the keyed MB connector or a sata PCI board and it's supposed to be set as master if any pins are available to do so. Watch out for the connector on the drives as they are very brittle with no bracing and if broken are NOT covered by warrenty. I use PM but there are other apps. that will do the same job.