I currently have a 250GB SATAII drive in a system that is in desparate need of a complete XP reinstall (with about 220GB of data on it). I just bought a new 250 GB SATAII drive (identical to the first). I installed the drive and moved a bunch of files over to it for back up (email, documents, video, music, etc. - essentially all non-program files). Can I unplug that secondary drive, do the reformat and reinstall, reboot, then plug the second drive back in and access those files? I can't really come up with a better way to back up that much data.