When booting MacOS, you can apply several startup keyboard combinations to perform certain tasks. These are useful if you encounter problems with starting your Mac. Most of them use the option/alt key and the command key.
Here are a few common ones to get started. To execute the commands, reboot your mac and hold down the keyboard combo until you see the Apple logo appear.
For more detailed information why not check out our guide Essential Mac OS: Sierra Edition. Click the book cover below for more information.
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