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Nonvolatile RAM (NVRAM) or Parameter RAM (PRAM) is used by your Mac to store settings like startup disk preference, display resolution, and time zone information.

#Mac shutdown shortcut touch bar how to#

Find out how to reset the SMC on your particular Mac. The process is straightforward but differs depending on whether you have a MacBook with an internal battery, a MacBook with a removable battery, or a desktop computer like an iMac. Sometimes power issues can be caused by the SMC, so it makes sense to try resetting the SMC if you’re having chronic shut down problems. The System Management Controller (SMC) is responsible for low-level functions on your Mac, including power management, battery charging, and keyboard backlighting.

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Safe mode isn’t the only alternative startup mode for your Mac, check out the full list of macOS boot modes and what they’re used for. When you restart your computer, it will boot back into regular mode. Your Mac will likely function just fine after a forced restart, but there is always a risk in doing this. If something went wrong and your Mac will no longer start up, learn how to fix a Mac that won’t boot. The shutdown process is put in place to protect core system files that should always be properly closed before the machine powers off. Note: This should only be used as a last resort. Wait about 30 seconds before starting your machine up again. Keep the button held down for around 10 seconds, after which your Mac’s screen should go black.

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If you don’t have a power button, then you’ll need to hold Control and Command plus the Eject button or the Touch ID button instead. To do this, first press and hold the Control and Command keys, then hold the Mac’s power button. This works on both desktop Macs and MacBooks. If your Mac still won’t shut down, the only thing left to do is to figuratively “pull the plug” and force a shutdown. To get a list of attached drives run this command first: diskutil list When All Else Fails: Force Restart Your Mac Otherwise, you can force eject via the Terminal with the following command (replace “DISK” with whatever your drive is called): diskutil unmountDisk force /Volumes/DISK You may see a new window pop up with a choice to “Force Eject…” which you can try. If you can’t get a drive to eject, then you may have found your issue. Safely remove any external drives by right-clicking on them and choosing “Eject ” or by clicking and dragging the volume to the Trash can. If you’re using an iMac, you can try unplugging everything except your mouse or Magic Trackpad (though keyboards shouldn’t cause an issue). For best results disconnect any attached peripherals and try again. Peripherals may also cause issues when trying to shut down your Mac. Assuming you’ve gotten rid of any errant processes, it’s time to try shutting down again. Other apps that may have crashed will be highlighted in red, followed by a label that says “(Not responding).” You’ll need to click on these then click on the “X” to kill them too. If they are, click on them to highlight them, then click on the “X” at the top left to kill the process. You can order the “% CPU” column by descending order to see if any apps are using a high amount of CPU power. Open up Activity Monitor (hit Command + Spacebar then search for it) and click on the CPU tab. If this doesn’t work, it’s possible that a background process has crashed and is causing the issue.

Right-click (or two-finger click) the app’s icon, hold the Options key on your keyboard, then click “Force Quit” and the app should close. You can force quit any apps that aren’t responding or won’t close. First, try closing all of your applications by right-clicking (or two-finger clicking) on their icons in the dock, and choosing “Quit.” Occasionally your Mac will notify you that “Application blocked shut down” and sometimes you won’t see any errors at all.

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Sometimes software can prevent your Mac from shutting down properly. Assuming your Mac won’t shut down, it’s time to try a few more things.