On 05/05/2017 01:14 PM, Fred Cisin via cctalk wrote: > Although, when I have an "unknown" disk, before I launch a sector > editor, I type "DIR", just in case it ISN'T anything challenging. I > didn't try flux-transition until I failed with my sector editor.
The hardest that I've run into so far is verifying that a floppy has *nothing* on it. Flux transition sampling showed zero correlation of timings (i.e. SD almost 0.0). You could use magnetic developer and see the tracks, but a photomicrograph showed no distinct reversal boundaries. Probably DC-erased was my best guess. --Chuck
