After changing the imac mid2007 hard drive, the cd drive wouldn't eject the disk that was inside, the protection staying on as well. I read on a forum that using a credit card to force the protection would work, the cd could eject. After checking the drutil list in the terminal, I noticed the cd drive was not detected even tho physically everything is working. I can't boot on the cd either. After changing the cd drive I'm still experiencing the same problem. Any idea?