Mac Startup Sound

Startup

But Apple’s start-up sound wasn’t always so Zen. For a while, the sound of Apple was the sound of something going horribly wrong, a combination of notes that early-eighteenth-century music. Listen to every Macintosh startup and crash chime beginning with the Macintosh 128k in 1984.

This isn't an unusual problem - no startup chime is reported by users here from time to time, and is usually somewhat inconsistent.
In most instances, the problem either self-corrects, or can be resolved by an SMC reset and PRAM reset. Try these, as follows:
To reset the SMC on an Intel mini:
-From the Apple menu, choose Shut Down (or if the computer is not responding, hold the power button until it turns off).
-Unplug all cables from the computer, including the power cord and any display cables.
-Wait at least 15 seconds.
-Plug the power cord back in, making sure the power button is not being pressed at the time.
-Then reconnect your keyboard and mouse to the computer.
-Press the power button on the back to start up your computer.
Reset PRAM
-Shut down the computer.
-Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in the next step but one.
-Turn on the computer.
-Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
-Hold the keys down until the computer restarts and you hear the startup sound for the second time.
-Release the keys.

Mar 4, 2009 3:27 AM

Reader Stephen Mette faces the age-old problem of how to shut up the Mac when it first boots. He writes:

Mac

I’ve always loved the Mac’s opening chime. But I’m the early riser in my family, and the volume of my new iMac’s chime is very loud. For the sake of family harmony (excuse the pun) is there a way—a terminal command or something—that I can reduce the volume?

You can solve this problem with a little forethought. On a newish Mac just press the Mute key on the keyboard before you shut down the Mac. When you next boot the Mac, you’ll hear nothing more than the Mac’s fans and hard drive.

If you’ve neglected to take this step and face a Mac that will bong with the best of ‘em on startup you can mute it by slipping a miniplug (found on a set of iPod headphones, for example) into the sound output port.

Finally, if you’re forgetful both on the back and front end, you can use this AppleScript, courtesy of Mac Developer Tips, to shut down your Mac and, in the process, turn off its volume so you hear no startup sound when it boots.

Mac Startup Sound Big Sur

Save the script as an application, make it Run Only, and use it to shut down or restart your Mac rather than the standard Shut Down and Restart commands under the Apple menu.

If you’d like to also automate returning your Mac’s volume to audible levels, create yet another AppleScript, save it as a Run Only Application, and make it a Login Item in your user account. That script simply reads:

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Mac Startup Sound Download

Mac

Mac Startup Sounds

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