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How to boot silently?

post #1 of 4
Thread Starter 

Pretty annoying to get this big sound DOOOONNG when you start the macbook, especially in the middle of a class or in a silent library.

 

Any clue on how to turn it off?

 

Thanks

post #2 of 4

By having your audio turned all the way down at boot.

 

Or you could try this, but it's old and by just some random guy.

Originally Posted by asdasd

This is Appleinsider. It's all there for you but we can't do it for you.
Reply

Originally Posted by asdasd

This is Appleinsider. It's all there for you but we can't do it for you.
Reply
post #3 of 4
The best way I find is to run the following command in the terminal, which seems to put it on the quietest setting:

sudo nvram SystemAudioVolume=" "

That's a space between the double quotes. Some people suggest different values to disable it like the following but the space is the only value I get to work consistently:

sudo nvram SystemAudioVolume="%80"
sudo nvram SystemAudioVolume="%00"

It would be nice if it just accepted integers e.g 0-3. To reset it, you can either reset the PRAM with command-option-p-r at boot or with the following:

sudo nvram -d SystemAudioVolume

I've noticed that sometimes plugging in and unplugging earphones resets it, which could be why people have made preference panes etc but try it and see. I don't mind the noise being separate from the audio system but there's no need for Apple to make it so loud.
post #4 of 4
Thread Starter 

Thank you Mavericks.

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