How to stop dvd player from opening when mac is turned on, How to stop dvd player from opening when mac is turned on

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If DVD Player opens automatically when you insert a movie DVD, open System Preferences > CD and DVD, and change this preference

What do you mean? When you turn on your mac, you dvd will play automatic? Or want to stop play the dvd when you insert it? Than just go to System Preferences>CDs & DVDs and choose what you want to do when you insert a DVD into your computer.

Try goining to system preferences>user/accounts>login items and delete any of that stuff in there. Please list your OSX to help others to help you with tour questions. All the best

Don't leave a disc in the machine when you sut down. Eject first.

This solved my problem. Thanks!

This isn't working. I've set it to "Ignore" in system preferences but DVD player still kicks in when I insert a movie DVD.