All questions regarding the dumping of media go here.
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What would cause DTC to skip a track without retrying? It first happened on my Ultima II (1983) program disk on track 40.0 which I chalked up to copy protection, but then it occurred on my Might and Magic III - Disk 3 on track 0.0. The disk then went on to fail on many tracks, but it only attempted track 0.0 once.
If it thinks the track is blank then it does not retry. I've had it do that to me on some marginal damaged disks, and I have to manually try re-reading until it figures out that yes, there is really data here. At least with preservation mode plus guided, I can just re-read the specific track and drop the new version in over the old (usually bad) one and then decode the preservation steam file with the PCE tools instead.
I'm sorry, I should have been more specific. It was actually reporting it with a big B and not as No Format. But I figured out that it wasn't actually reporting a bad sector, but just a mismatched sector. I think that's why it didn't retry. (This makes sense since that's the copy protected sector for Ultima II)IFW wrote:If the format is unknown/unformatted there is no point in retrying since it will remain that way - except for some kind of damage/misalignment, as SomeGuy wrote above.
I'm guessing it was just reading residue or something for the Might and Magic disk.