On 11/24/2014 5:21 PM, Noel Chiappa wrote: Inspect them visually. Spin the cookie carefully. Do they look moldy, splotchy, or otherwise crufty through the oval access hole? If so, don't bother. Or slice open the jacket (I use a paper cutter to shear off a folded edge), clean the cookie, and insert it into a clean jacket (if you have another). But if it looks ok, stick it in the drive, close the door, and listen carefully. Does it sound horrible and scratchy? Like sandpaper? Take it back out. It might already be too late, but it's not hard to clean the head. If things sound smooth or at least fairly smooth, you probably made it though the ages. Memorex and Control Data (5-1/4") are my all-time least favorites...