All I know is that I tried to make a copy to leave at work so i wouldnt have to transport the originals around with me. And I couldnt my burner would make the copy but the computer couldnt read it. Specifically when you start RF and it says please insert disk ___ i am sure its some license check. Randomly poping up and asking you to insert one of your discs to make sure you still have em? I am not sure. But, when I tried to use the copied ones it wouldnt work. OH WELL heres to carrying around 6 discs to and from work.