Re: "While sorting stuff today, I came across the Dysan software for testing floppies. We used to use this for testing many of the early full size and half height 5 1/4 floppies. Dated 1985, 5 disks and manual in a plastic wallet binder. I was going to put it up on eBay but realised that maybe someone on the list would get more benefit from it. Would rather see it go to a good home than make a dollar or two from it. Let me know. Billy" While the digital diagnostic disks themselves cannot be duplicated, the programs that analyze the disks are just normal EXE files. You should be able to copy those, and then you could both sell the originals and also make the analysis programs available. In my case, I have the DDD disks, but not the programs to run the analysis. [Although I'd like to get a 3.5" disk]. By the way, it's Dysan, not Dyson