igor0
2
I don’t think it’s a hardware problem, it’s probably some backgound program touching the diskette for some reason. It might be tricky to find which one is that though…
If you’re able to operate File Monitor, I’d suggest to keep it running with filter defined to A:* and see what appears there (when the error pops up again, a few new lines should appear which might tell us the diskette access “source”).