Some more data points.
I have tried four different floppy cables and 6 different floppy drives (different brands, as well). I had one combination where it actually booted the P112/GIDE floppy. Got sector read errors. But wait, it gets better. I rebooted about a half dozen times. The errors move. Never the same sectors twice. What the system does depends on which sectors fail to read. None of the disks created with winrawwrite work. I am going to assume at this point that USB floppies can not be used to build these images. I have a dos box with a real floppy interface but moving stuff to it is not easy. (time to fire up Kermit again!!) In most cases I get "unrecognizable disk format" or "error reading boot track(s)" followed by "unrecognizable disk format". I do have to admit that I find it hard to believe that the cable to the floppy can actually make a difference. bill