1:1 Copy Explaination

Hey all,
I have used the search function, and couldn’t find an answer to this. What is the difference between a CD thats done 1:1 exact copy and those games cd with a crack in it already?
With the 1:1 perfect copy, does it mean it doesnt need the no-cd patch?
Also, those cds with crack on it, does it mean they no longer have protection present and can be copied using Nero etc?
Thanks :slight_smile:

A cd with a crack in it can be copied using nero. Other 1:1 copies, might need some help to run (eg the atip check)

And cracks or patches are illegal, hence not allowed on this forum.