Optical Drive Wake-up Noise

Two identical MacPros / Snow Leopard- one is quiet at wake-up, on the other the empty optical drive spins loudly for a few seconds. Obviously one machine knows the drive is empty and the other doesn't.
Other similar problem on MacBook / 10.5.8 - Empty optical drive clatters at start up (sounds like it's trying to mount a non-existent disk).
How do I stop this?

Hi,
Not a solution, just a question, sorry. If there's a disc in the drive, it's not as noisy from the start?
I remember something I was told a long time ago, it may have been a myth though. That for top performance one would want to have a disc in their machine. The idea being that once a disc is in there the computer doesn't have to check if there is one there all the time, therefore not diverting the Macs resources. If that has any truth to it, maybe that's why the noise. That is you're right, the noise indicates it keeps checking to see. Why two identical Macs wouldn't be the same there though, I don't know. Perhaps something funky with that particular drive or with that particular Mac itself.
I have my DVD drive mounted externally via Firewire, it's a lot noisier now overall, even if i start it up with a disc inside. However as soon as the disk appears on the desktop and if I double click on it, the noise mostly stops immediately.
No help there at all, was there... Well, at least I bumped you up a bit.
Sorry and Good luck.
PS: You have no Mennonite history in your family tree, do you by any chance? I have Yancy's going way back in mine and they were.

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