Now, Control–Option–Command–F19 works with the external keyboard and shuts down the computer. This will safely close all the running apps and shut down your Mac without data loss. The first is to press and hold the power button for the system for about 5-10 seconds. First, try the normal shut down method by pressing the Control + Option + Command + Power buttons. There are two ways to perform a hard reset. You can use the keyboard shortcut to shut down your Mac both normally and forcibly. Enter the halt command syntax exactly as described: sudo halt. This won't work well on the limited internal keyboard, but for the external wired keyboard I set up one of the useless function keys (F19) as the Eject button. Method 3: Use Keyboard shortcut to force shutdown of Mac. The process and syntax for ‘halt’ to turn off a Mac is as follows: Open the Terminal. I did, however, find that Karabiner Elements does allow another key to be remapped as Eject. When I disable Karabiner, the shutdown shortcut works normally. We will try our best so that you understand this guide. (any with unsaved changes will be prompted to save), and then the Mac will shut down. It seems that, at least on my machine, the key remapping program Karabiner and the Sierra-compatible version Karabiner Elements causes the Eject button to not register at all. This tutorial is about How to Make a MAC Start/Shutdown Automatically. Here are some of the most useful keyboard shortcuts for macOS. UPDATE: I found that the standard Control–Option–Command–Media Eject does indeed work with Sierra. I assume Apple added the additional shortcut for newer devices that don't have optical drives and eject buttons, but they neglected to maintain the eject-button shortcut for the older machines within the Sierra update. Some computers also don’t show an active power light or have any fan or drive noise. How To Force Shutdown Frozen MacBook TutorialForce restarting a MacBook, MacBook Air, or MacBook Pro is generally considered a last resort, but if the wors. A Mac is completely shut down when the screen is black. If you don’t want app windows that are open to reopen when your Mac restarts, deselect Reopen windows when logging back in. I tried the power-button shortcut on my MacBook Pro Mid 2012 with macOS Sierra 10.12.4 and it worked similar to the old eject-button shortcut (maybe a little slower, but that could be the new OS). On your Mac, choose Apple menu > Shut Down. Click on the 'plus' sign and choose 'All Applications' in the pulldown menu. Click on Applications Shortcuts in the list at left. According to Apple Support, there are two shortcuts for shutdown: Open Keyboard Shortcuts in System Preferences.
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