I was listening to Mac Geek Gab, my favorite podcast, and heard a tip that involved pressing the Option key while selecting a menu item or adding the Option key to a keyboard shortcut. Now release the keys and then turn your Mac back on using the power button. You can also change what your Mac does by holding down the following keys or key combinations during startup. And yes, in case it wasn’t evident; the OPTION key is the ALT key, which is also represented by the funny looking symbol ⌥ on Apple and Mac … The Mac Option key has different functions depending on the application and key combination. Whenever I hold the option key upon boot, my Mac Pro does not register any input and just hangs on a black screen and never boots up. Print these boot option keys, because they’re particularly helpful to have […] I'm trying to re-install a fresh copy of Mojave through a USB Stick, and I'm trying to boot from the USB. Your Mac and OS X have a variety of startup keys and key combinations you can use to affect how the device starts up. Other keyboard shortcuts are available after your Mac has started up. The most common and probably most frequently used commands are:. There are two Option keys on modern (as of 2020) Mac desktop and notebook keyboards, one on each side of the space bar. It is located between the Control key and Command key on a typical Mac keyboard. I hear the startup chime, I press and hold the option key, and nothing happens. Shift key, for instance, starts your Mac … It is located in between the Command/Apple key and the Ctrl key. It generally sits located next to the Ctrl key on the left of the bottom row. (As of 2005, some laptops had only one to make room for the arrow keys.) On a PC/Windows keyboard, however, many of the same keyboard shortcuts utilize the Control Key (⌃) instead of the Command Key. However, the option key on a Mac keyboard is used in a different way than the alt key on a Windows PC. When your Mac powers up, it normally uses the system on its internal hard drive unless you change this behavior by choosing System Preferences@@→Startup Disk. The Option key is probably one of the most powerful and underused keys on the Mac keyboard. The Option key can help you get things done in one click which otherwise would have taken you at least a couple of clicks. You might be also familiar with the Ctrl and Alt keys … The Option key on a Mac, alternatively known as the Alternate key. In terms of functionality, the alt key in Windows is often more comparable with the Command key than with the Option key on a Mac. Reset SMC: Shut down your Mac, and then press and hold the left-side Shift (⇧)—Control (⌃)—Option keys along with the Power (⎋) button, all at the same time, until the computer turns on. 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