When I was selling my software on diskette, I wrote my own tools for diskette duplication, using a Victory autoloader - I also boiled-down the core functions into a one-at-a-time disk command line duplicator that works with standard floppy drives called XDISK. Like most disk-to-file copiers it will read a complete image of the floppy track by track into a disk file - unlike most file-to-disk copiers, it will low-level format, write, and verify each track in a single pass as it writes the file back to a disk. It does not care *WHAT* is previously on the disk, as the first command it issues on each track is "format track". This can be used to restore disks that DOS refuses to format due to problems in track-0 (just write out a blank floppy image) - I can send it to you if you like (runs under any version of DOS). Regards, Dave -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html