MSDOS, programming, and disk changes?

On 02/13/2014 03:30 AM, Bert Thomas wrote: Well, I do now, and am feeling a bit sheepish :) With every test I'd done, I'd sanity-checked the data that I was creating on another machine with a HD drive - like an idiot, I'd figured that I wasn't modifying the data, so the HD's drive's narrower write head (compared to the DD drive in the 'source' XT) wasn't going to be a problem. Somehow (I blame ~20 years of brain rot) I'd completely forgotten that DOS maintains a "last access" timestamp for files, and so every time I copied data from the HD drive it would update the FAT on the floppy, which was then causing a variety of errors when subsequently trying to delete the file via the DD drive. Urgh. :/ Anyway, problem solved (I *really* need to find another DD drive; my only other one that I have here seems to have some major alignment problems) Thanks for the help, Jules