Hi, it means that both discs are different versions of a game, therefore they cannot share the same hash.

Different versions of a game... I only heard of Paper Mario, which was rereleased because of a bugfix.

I can check the unmatched games for different versions and add bca and dumpinfo, if they are different. Is this ok?

because of an accident, I lost all of my GC and Wii backups. I also lost the backup of the backup, so I had to dump all my games again.
Lessons learned: Store at least one backup at another location.

While I used USB Loader GX to dump my games in the past, I now switched to CleanRip 2.0, because Resident Evil Zero couldn't be dumped with USB Loader GX (the detected size of the disc was wrong). I also liked the verification with a provided dat-file.

I used my softmoded Wii 4.3 (latest HBC, and some cIOS to play my backups) and CleanRip and the attached wii.dat (found it somewhere in the web) and your gc.dat. I was able to dump and verify all my 74 GC games. But my Wii games had some problems. I have 62 Wii games and was only able to dump and verify 51 of them. The other games could be read without errors but does not match the md5-hash of the wii.dat. I dumped the games 2 times and got the same (non matching) hash. I kept the bca- and dump-info-files.

Any idea, what's wrong here?

Edit: One non-matching game is:

--File Generated by CleanRip v2.0.0--

Filename: R42P69
Internal Name: The Sims 2 Castaway
MD5: E007D4D3BB15EB9CFA60B13593E1B0E5
SHA-1: 8D5981A3F6DC514DF8FCC0DCE956BFAE18C83B0B
CRC32: 2FD02E95
Version: 1.00
Verified: No
Seconds: 1313

Here
http://forum.redump.org/topic/16663/add … -new-dump/

--File Generated by CleanRip v2.0.0--

Filename: R42P69
Internal Name: The Sims 2 Castaway
MD5: 27BFB11B9851CA65200FBEEB32FD1D03
SHA-1: 5748B678BC14B4411810385B4721B1FA8FE81866
CRC32: 67B5621F
Version: 1.01
Verified: No
Seconds: 969

is the version of the game, which is listed in my wii.dat. The version is different (1.01 vs. 1.00). What does this mean?