my mac won't read a cd
I've looked everywhere for the answer to this without much luck so I hope someone can help. An old PC had some pictures I wanted to keep so I burned them onto a disk. Played the disk or another pc and they worked just fine. Today I tried adding them into my iPhoto and can't even open the cd. It appears like nothing is on it but it plays just fine on other computers. Any suggestions?
iMac, OS X Mountain Lion (10.8.2)