[arng1]

As the title states, my optical drive in my mac pro is very loud. Its in a well ventilated area and sounds as if its running at full throttle all the time. I did a hardware test and it came up withe error code 4SNS/1/40000000:Vp0C. I also tried a SMC reset and still nothing. Any ideas guys??? Update, its actually the power supply fan not the optical drive as I originally thought.

[thebunny]

I had the same problem: link.

I ended up flashing the drive with the firmware from The Firmware Page :: Index and that fixed it.

[arng1]

well, I took it o the apple store today and they ran a diagnostic test on it. It turns out there was a bad sensor on the logic board that was telling the computer it was running really hot. The computers power supply fan was running full throttle attempting to cool it off. So now I have to wait and see if they can fix it....