How to backup Gothic 2?

[Machina]

Well, here is the problem, I DID install from the backup ONES, and played the game just fine when I was using my DVD-ROM (it cannot read subcodes), and it installed just fine. The game dtected the backed up CD just fine when I tried to launch it.
Then I format, and now I try to install using my DVD-ROM and... it doesn't work! No scratches on CDs at all!
CD-RW does cannot install it either!