The 5.25 floppy covers the hard drive. I removed it to reveal the top of the hard drive. There is a sticker reading ST-138. Beyond that is a sticker with some data on it. Under CYL1 are the figures 206, 180, 181, 216, 609. Under HD are the figures 1, 1, 1. 4, 4. Under BFI are the figures 603...