However after a reboot the value was set to %e8 (and the startup chime was still silent). Note that some had success with sudo nvram SystemAudioVolume=%80, while others with sudo nvram SystemAudioVolume=%00. On my Mac the default value was %aa and setting %00 worked. For Lion and onwards this won't work though.Īnd there's the SystemAudioVolume trick. There's a utility called StartupSound.prefPane and it works, but only with Snow Leopard (10.6.*) and previous Mac OS X versions. but you'll have to unmute/mute every time you want to use the headphones or want to reboot. If you mute the headphone too, then you'll get rid of the startup chime for good. But the startup chime will still be there in the headphone speakers. Select the applications you want to disable and click the '-' icon. Here you should see all the applications that are set to start automatically with your Mac. Muting the internal speaker will make it a lot more silent if you use headphones. Change startup programs mac How do you turn off startup programs on a Mac Click Users & Groups and select the user in the left pane for whom you want to disable startup programs. These will not completely mute the startup sound. Remember if you mute it there will be no external speaker sound. Adjust the output volume (which controls the chime volume in the external speakers) with the slider at the bottom of the window.

You will then see Headphones (Type built-in) highlighted in the window.Go to System Prefs > Sound >, then click on the Output tab.Plug in speakers or headphones to the headphone jack.In this article, you will learn how to adjust the color of your video in Windows 10, along with some vital color correction terms. See also: Fix Windows 10 Adaptive Brightness Missing/Not Working.To set the volume for your external speakers: Since the update to windows 10, colors are quite off. Remember if you mute it there will be no internal speaker sound. Adjust the output volume (which also controls the chime volume) in the slider at the bottom of the window.You will then see Internal Speakers (Type built-in) highlighted in the window.Go to System Prefs > Sound, then click on the Output tab.Unplug speakers or headphones from the headphone jack.To adjust the volume on your Mac's internal speakers:

Adjust mac startup programs