I use Alcohol 120% to create an image of a CD and then burn it onto a new one if it has errors on it. I had an old game called Thief 2, I wanted to play around with it a bit for fun, but when I tried to install it it crapped out on disk 2 in the install, said something about an error in one of the video files. I made an image of it with Alcohol and it installed no problem.