Redump Forum — What is needed for drives to be usable just for verifications?

Re: What is needed for drives to be usable just for verifications?

2024-03-15T10:02:55Z

0xbe can be trusted to retrieve correct information from perfectly standard non-protected single-session single-track mode 1 CD-ROMs with no mastering error only, problem is you just can not guess, and that's part of the reason why it will never be "enough" for building a database. From personal experience, 0xbe drives gave matching results for more than 90% of PC games, including mode 1 + audio discs with the help of EAC.

Re: What is needed for drives to be usable just for verifications?

2024-03-15T01:19:22Z

For the purposes of verifying your own dumps, if you get the same hash as redump on any drive, you can be confident the dump is good. For redump, only the drives listed on the wiki are acceptable. All other drives have a variety of feature support, and redump does not recommend anything in particular.

What is needed for drives to be usable just for verifications?

2024-03-14T21:07:59Z

It's getting difficult to get good plextor, and some of people only need/want to do backups and use checksum to validate it. This rises question what properties do drives need? (We can assume that hash is known.)

0) Reading method.
When BE method is enough? (instead of D8/BE CDDA)

1) subchannels
Can we check from redump entry if this is required?

2) LeadIn and LeadOut
Like subchannels.

4) C2
Lack of C2 means lack of error correction, or completely lack of error detection (so we don't know which sectors are bad)?

5) CD-TEXT
Older plextors do support D8 command, but don't support this part. Again can we check from redump entry if this is required?

Another goal of this post is to allow detecting unique discs. If disc should be dumpable on this drive and generate X hash, but doesn't, then probably it's best to send to someone else.