How stop Macbook White to try to find a CD I have a very annoying problem. My old Mac Book White with OS X Lion try to find if there is a CD/DVD every X minutes.

The problem is because it cause a noise. If I put a CD/DVD inside it, from time to time it start to read the disk. 

Maybe it happens because I share the CD/DVD device with network. This is annoying. I only want to check the disk when I try to read it.

How can I stop it?

One solution is unplug the ethernet cable. It worked now. But... There is another solution?
If you disable the Spotlight indexing (search) for the DVD it should stop pestering you with the message.