I have some technical documents a buddy burned to a CD. He checked to make sure the CD would open (used his desktop comp). I have the CD and can't get the CD to work at all. When placed in the drive, the thing spins and then a message to "insert a disk" appears.
I've looked at the disk and it appears to have the material on it. Gave it back to my buddy and it opens right up, without any problems, on his desktop. What's up with this? I'd like to use my stuff, but can't access it. The documents are in PDF.