Hi Bill I've just seen a post you made to a forum in '97 about the Heathkit H-89 computer and bootable disks. I have two of these machines (well H-90's) and one original HDOS bootable system diskette (hard sector). Back in 1992 when I acquired these machines, I successfully made hard-sectored disks out of soft-sectored ones by punching the sector holes using the original disk as a template - amazingly this worked fine! Anyway - my question is, assuming that you were able to duplicate the disks, do you know anyone who has a bootable CP/M (or any other O/S for that matter) disk that they would be happy to copy for me, as I only have HDOS & Benton Harbor BASIC on my disks! I can supply the floppy disks for this purpose as I have recently found a limited supply of unused hard-sectored disks! Sorry to email you out of the blue, but there are very few people who know anything about these machines! cheers Robin