Is there any way to prevent the OS from querying the Superdrive when start

Just a random question. Whenever my MacBook Pro starts up (either from sleep or a complete/fresh start, the OS queries the drive slot to see if there is a disc present. While this may be normal behavior, it seems to slow down the start up process. (I rarely ever have a disc in the drive). Just curious if this, in fact, normal, or if there's something awry.

Is there any way to prevent the OS from querying the Superdrive when start
No
he OS queries the drive slot to see if there is a disc present.
How can you tell? Based on the noise it makes?

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