Moreover, there are plenty of programs (such as StartNinja) that promise to disable the chime, but I found that they didn’t work with macOS versions after 10.10. If you’ve somehow managed to linger on an older version of macOS (something we wouldn’t recommend), that process may still work, but the rest of us are stuck with the more temporary solution of muting during startup.
#Disable mac startup sound password
In macOS Sierra, the old trick of copying “sudo nvram SystemAudioVolume=%80” or “sudo nvram SystemAudioVolume=%00” into a Terminal window, typing in your password and pressing Enter no longer works. If you want to take the more drastic step of permanently disabling the startup chime, you’re out of luck. If you’ve forgotten to pre-mute your Mac, you can also hold down F10 (the mute button) during startup. So, if like me, you have a pre-2016 Mac and are still living under the tyranny of the BLANG, there’s a very simple technique you can deploy to get some peace and quiet: simply muting the volume before restarting or switching off is enough to silence the Mac startup chime. Consequently, I did a mini leap of joy when Apple canned the famous F-sharp major note in its latest devices (with the very notable exception of the MacBook Air 13in 2017), meaning that I could now boot up in blissful silence… if I had one of its latest devices.
I’m in the latter camp, having repeatedly been left red-faced by the noise in libraries, university lectures and early-morning commuter trains. For some, it was like a war cry for creatives – the noise Steve Wozniak might have made whilst riding into battle against Microsoft. For others, it was just bloody irritating. For almost three decades, the iconic (or, according to its creator Jim Reekes, “earconic”) Mac startup chime heralded the beginning of working days, long essay-writing sessions and gaming marathons.
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