This all started when I installed the beta version of X on my Powerbook. After the flawless install of X, I was disappointed that the DVD player wasn't included, but I knew it would be soon so I didn't worry about it. After playing with X for about three days straight, I went back into 9 to watch a DVD movie. When I inserted the DVD disk, the drive made some noises, but would not mount the DVD disk. I call Apple support, they had me try some things, but none of it worked. I tried all the Mac sites, but nothing they suggested seemed to work. I pretty much gave up on the idea and figured my DVD/CD drive was bad or the problem would be fixed with 10.1. I could still mount regular CD's, but DVD ( UDF Disk ) would NOT mount.
A couple of weeks ago, I was surfing the Mac sites and came upon www.osxfaq.com and saw their section on "Dump Terminal Tricks" Below that section was another section that just gave random CLI commands to do various task. One of them was to "Speed up performance on older machines". I thought I would give it a try. When I ran the command
sudo update_prebinding -root /I received a message stating something like "DVD Player.pkg" wasn't working properly and it was going to attempt to fix the issue. It said that the problem was then fixed. I didn't really think anything of it, plus it was about four in the morning, so I was ready to go to bed. When I came home from work that night, I remembered the message I received the night before, and I thought, what the heck, I'll try putting in a disk and see what happens. I put my Braveheart DVD in, and voila, the disk loaded and DVD Player started up. I pressed play and there it was, my DVD drive worked, no replacement parts, just a single line of code.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20020617092000200