How can I make a copy of The Longest Journey?

[Foxglove]

I copied the files from the first CD to my hard drive (some of them can't be copied), then burnt them into a CD with Nero, after replacing the original game.exe with the patched one.
I believe that CD works, cause I'm playing the game (I installed it with the original CDs to my HD) from the copied CD. (I don't know if it will fail if I continue playing).

But I couldn't copy Cds 2 to 4 . I tried to do it both with clone CD and Nero, but they don't work. Does anybody know how can I do it? Thanks a lot... -