macbook noise

[Zillicah]

What is that noise when you turn on the macbook? It is like some sort of "scanner" noise... i dont know how to explain it. what happens inside when the noise happens, what is the computer doing?

 

[rgarjr]

I think its just the SuperDrive.

 

[pellets007]

It's either the SuperDrive or the HDD starting to spin.

 

[Ivan P]

It's the SuperDrive, because it's the exact same noise as when you insert/eject a disc.