www.makemkv.com

I had a thought regarding discs that are damaged. Usually one has to buy a replacement disc, but what if the replacement disc is itself damaged, but in a different place? Scratches are unlikely to be in the exact same place on two identical discs. Could there be an option to pause reading a disc where it has a problem, swap it out for another, and resume ripping from that point? Or perhaps by using two (or more) drives, having copies mounted simultaneously and switching between them in case of any errors are detected?

This of course would not help in most cases of mastering errors as all discs would likely have the same error in the same place, but it could help for out-of-print titles for which the used market is only available for alternate copies.

My apologies if this has been rehashed before; I’m new here.

Ever heard of something called the Domesday Duplicator? (https://www.youtube.com/watch?v=QDlbwl3f39Q) It is for laser discs, but has similar ideas.

As for something like that in MakeMKV, lots of people have made similar suggestions.
https://forum.makemkv.com/forum/viewtopic.php?f=10&t=38554

The program's author, Mike, has spoken about a feature like that in the past. I don't know if such a feature will ever ship though.

You could use the software ISOBuster to do that. You will fist have to disable bus encryption by reading the disc in with Makemkv. If the copy based on the two discs is successful you will have an AACS encrypted ISO copy you can then decrypt with Makemkv.