OK I've had the same problem, and my solution came "from the heaven" (or hell? )
This was the scenario:
I put the disc in the drive. It started spinning and doing the weird noises I never heard before. Yuck.
I ejected and tried again. Same result.
Then, my MBP kinda... slipped from the stand I have it on and that must have shaken the disc reader or something!! And suddenly, the common noise of reading a DVD started. And then, everything worked fine.
So, it might not be a solution for everyone, but try shaking or sliiiiightly smashing your notebook while it's trying to read it?? See if that helps
This was the scenario:
I put the disc in the drive. It started spinning and doing the weird noises I never heard before. Yuck.
I ejected and tried again. Same result.
Then, my MBP kinda... slipped from the stand I have it on and that must have shaken the disc reader or something!! And suddenly, the common noise of reading a DVD started. And then, everything worked fine.
So, it might not be a solution for everyone, but try shaking or sliiiiightly smashing your notebook while it's trying to read it?? See if that helps