I know I should know better, but I took a chance with 2 OCZ agility 60 gig drives that I purchased on Ebay for $90. Unfortunatly when I try to use the drives I checked em out with a external hard drive enclosure and i can format them, transfer data to and from the drives and they seem to work. However when I try and use the drive as a primary drive Windows 7 won't install on them at all, however when I set them up as a secondary drive i can access them just fine......i'm honestly at a loss.