I have some Karaoke CD-i discs that seem a bit weird. When I select CD-i as system in DICUI, the dump itself seems to go right but an error pops up that EdcEcc.txt and the .scm file are missing (which are indeed missing). When I dump as Audio CD it works fine.
I don't know what kind of disc this is though. DIC detects 15 audio tracks and no data-tracks. However, the manual of the disc shows some kind of track selection screen. And even if it were a pure audio-disc and it would be just some kind of built-in CD-i music player, it still doesn't make sense because the manual shows that there's track information and even some kind of images. I'm not 100% sure whether the images come from the disc though, or whether they are built-in images.
Furthermore, when looking at the disc in IsoBuster, IsoBuster shows 16 tracks total (whereas DIC detects 15). However, track 0 has a red plus icon in front of it which means according to the manual:
Plus, in IsoBuster track is much larger than the other tracks. Track 0 is about 180MB and the other ones are around 30-40 MB. In DIC however, track 1 (the first track) is about 220 MB; seems to be the data that IsoBuster shows as Track 0 and Track 1 combined.This icon can be placed next to a track a session or a file icon.
It means that IsoBuster felt the need to compensate or alter what the drive returned to get to the data.
E.g. CD-i discs are often not correctly recognized by CD/DVD-ROM drives and IsoBuster tries to compensate for that (possibly assumes tracks at certain locations) to be able to give access to the data.
I'm a noob when it comes to all these disc technicalities though, so the above might be total crap.
Logs of the dump with CD-i as selected system are here: http://a.tmp.ninja/isB7QKpDiEc1.7z
