Hennadiy Brych

An interesting case indeed, probably a CD mastering issue. I can confirm that your GOOD dumps are good. Not sure how can I prevent such situations from happening. If we...

Hmm, this is interesting, will check that out. `scheme: unknown` is a control check if I detect mode flip in that 1 data sector but cannot fully recognize securom version....

Most likely it's not recognized correctly because your USB enclosure is editing drive vendor and device string. Do you have any other adapters to try?

By the way - you can just try to force drive options on the command line (--drive-* options), use the settings from here: https://github.com/superg/redumper/blob/main/drive.ixx#L153

something like `redumper --drive-type=PLEXTOR --drive-read-offset=99 --drive-c2-shift=294 --drive-pregap-start=-75 --drive-read-method=D8 --drive-sector-order=DATA_C2_SUB`

Hmm, could you try `redumper --drive-type=PLEXTOR --drive-read-offset=99 --drive-c2-shift=294 --drive-pregap-start=-75 --drive-read-method=D8 --drive-sector-order=DATA_SUB` and let me know if it's any better?

Logs look ok, Track 1 doesn't match and also 1210 found some non zero pre-gap data, weird but can't tell more without experimenting with the drive here. Anyways drive without...

This can be handled correctly. You probably saw my MCD code. How it was implemented - I extracted those headers from all available roms to see all the corner cases...

https://forum.imgburn.com/topic/24222-unique-disc-identifier-for-dvd-r-discs/#comment-158227

Does that happen for every large CD, e.g. any particular kind of disc, multisession etc? Can't think of anything that might affect it except some timing configurations.