The 7th Guest (CD2DVD)
 

To 7TH_GUEST_1:
- copy cd1
- copy cd2. Overwrite all if prompted.

Extract CDDA from CD2.
ex. Exact Audio Copy

Burn to disc with redbook audio.


NOTE:
Originals were 'European version'.
It may not be this easy for other versions.

The 7th Guest has different video, audio, and script files in compressed archives with the same name on both discs. You won't have the entire game if you overwrite, you'd have to extract and repack all the files.

Just checked the discs used in the conversion: European Version.
There wasn't any name conflicts with the *.GJD files on both CDs.

The game format is:
http://wiki.xentax.com/index.php?tit..._7th_Guest_GJD

That shouldn't be seriously hard to combine the RL + GJD files. Unless there's multiple GRV files.

If you give some examples (file names,sizes + sample different contents between RL files), maybe I could 'blindly' try writing a tool.