Comments on: How to Disable the Mac Boot Chime Completely

By: Peter

Peter — Sat, 20 Apr 2013 14:54:24 +0000

“sudo nvram SystemAudioVolume=%20″
works for me, late imac 2012, OS X 10.8.3.

%20 means its just 20% loud so you can adjust it as you want. Weird thing is that after using this command my mac is restarting and booting slower than befor :/ And its just 3days old imac so (

By: Mark

Mark — Fri, 12 Apr 2013 23:33:34 +0000

what a wonderful system Mac is. it takes a 100 experts to turn off a bloody annoying sound. moron jobs

By: Sef

Sef — Fri, 12 Apr 2013 02:18:19 +0000

@jchlu

You’re the most sane person here. Thank you.
Don’t stop the car for lurching trollers, hit them.

“sudo nvram SystemAudioVolume=%05”
and
nvram -p
to double check it worked perfect on 10.8.2

By: RussianBlue

RussianBlue — Sun, 07 Apr 2013 18:42:40 +0000

Get an app from the App Store called “Calm” it cost me £2.49 but it works a charm on my iMac running 10.8.3.

There’s also a Calm Lite for £1.49 which does a similar thing.

By: N

Thu, 21 Mar 2013 23:30:23 +0000

Brilliant. Advanced computer science degree? WTF

By: John

John — Sat, 02 Feb 2013 16:02:06 +0000

This sudo command works changing the numbers “00″
“sudo nvram SystemAudioVolume=%80”

By: ks

ks — Sat, 26 Jan 2013 05:58:47 +0000

Works perfectly for my MacBookPro OSX 10.8.2 …

Thanks

By: PC user

PC user — Fri, 25 Jan 2013 05:27:08 +0000

Thank you for getting to the point. This commentary is almost as annoying as how complicated it is to do something that should be very easy. I thought Macs were user friendly.

By: RA Stuehler

RA Stuehler — Wed, 09 Jan 2013 06:03:50 +0000

Try %d1

as in sudo nvram SystemAudioVolume=%d1

By: goran

goran — Thu, 03 Jan 2013 18:48:27 +0000

sorry jchlu that doesn’t seem to do anything…

By: goran

goran — Thu, 03 Jan 2013 18:22:01 +0000

i hate that startup chime!
and to all the idiots saying it is necessary in case something goes wrong…

HOW ABOUT HAVING A CHIME WHEN SOMETHING IS ACTUALLY WRONG – AND NOT THE OTHER WAY AROUND!

absolutely idiotic…

love my mac though… but some things are fking irritating like the stupid startup chime…

By: jchlu

jchlu — Thu, 03 Jan 2013 15:19:41 +0000

Wow, this thread went down a rabbit hole, huh.
I did a quick

man nvram

saw an option to print current values

nvram -p

ran that and noticed “off” settings seemed to be=%01 so ran

sudo nvram SystemAudioVolume=%01

and that worked for me running 10.8.2

By: Bob Bob Bob

Bob Bob Bob — Thu, 13 Dec 2012 16:09:32 +0000

Given that you have an “advanced degree in computer science,” why are you trolling the Web for a pointer on how to silence the Mac start-up chime? Then again, props to you for chiming in with an unrelated post about your academic achievements. I imagine your classmates from the “University” of Phoenix will be impressed to seeing you weigh in on the critical computer science issues of our times.

By: tommct

tommct — Wed, 12 Dec 2012 22:07:30 +0000

This is one of the stupidest Apple things I’ve come across. I have a MBP running 10.8. I cannot mute or change the startup sound level from what it was set to last. I don’t know why the “hold mute key” option is gone. Next thing Apple is going to take away the power button because, of course, we Apple zombies never want to turn off our devices!

By: Jay

Jay — Tue, 06 Nov 2012 17:40:12 +0000

Wally had a pretty crappy boot system anyway…