![]() ![]() ![]() If you're using Boot Camp to start up from Microsoft Windows, set Startup Disk preferences to start up from macOS instead. Then shut down or restart and try again.Some key combinations won't work if your Mac is using a firmware password.If you're using a keyboard made for a PC, such as a keyboard with a Windows logo, try a keyboard made for Mac. Or use your built-in keyboard or a wired keyboard. If you're using a wireless keyboard, plug it into your Mac if possible.Some keyboards have a light that flashes briefly at startup, indicating that the keyboard is recognised and ready for use. You may need to wait a few seconds before pressing the keys to give your Mac more time to recognise the keyboard as it starts up.Then press and hold the key combination after pressing the power button to turn on your Mac. If your Mac won't shut down, press and hold the power button for up to 10 seconds until your Mac turns off. If you can't get a key combination to work when restarting your Mac, shut down your Mac first.Press and hold all keys in the given combination together, not one at a time.Zapping the PRAM returns it to its default configuration for display and video settings, time and date settings, speaker volume, and DVD region settings. Press and hold the key combination until you hear the second set of chimes. Hold Command (⌘) + Option + "p" + "r" during startup to zap the Parameter RAM (PRAM), an option that long-time Mac users will remember.This shortcut ejects a CD or DVD from the optical drive. On a two- or three-button mouse, the primary key is usually the left button. Hold down the mouse's primary key during startup.Hold Command (⌘) + "s" during startup to boot your Mac in Single-User Mode, a special mode used for troubleshooting and repairing complex hard drive issues.Hold Command (⌘) + "v" keys during startup to boot your Mac in Verbose Mode with a descriptive text sent to the display during the startup process.A specialized version of the Mac OS runs that includes a small suite of utilities, including Disk Utility, and the ability to download and install the Mac OS or to restore from a Time Machine backup. Hold the Command (⌘) + Option + "r" keys during startup to cause your Mac to boot from the internet using Apple servers.Hold the Command (⌘) + "r" keys during startup to cause your Mac to use the Recovery HD partition, which allows you to restore the Mac OS, or use various utilities to troubleshoot your Mac.Safe Mode disables login items and nonessential kernel extensions. Hold the Shift key during startup to boot your computer in Safe Mode.When each one auto-closes, most apps will ask if you’d like to save your progress. The startup manager searches all the volumes connected to your Mac and displays those that have a bootable operating system. Hold Command () + 's' during startup to boot your Mac in Single-User Mode, a special mode used for troubleshooting and repairing complex hard drive issues. Keyboard Shortcut for Restarting a Mac To restart your Mac, use the following key combinations in the precise order: Control + Command + Eject/Power This will automatically quit all of your currently open apps. Hold the Option key during startup to open the Mac OS startup manager, allowing you to select a disk to boot from.Hold the Option + "d" key during startup to boot up using the AHT over the internet or Apple Diagnostics over the internet.Hold the "d" key during startup to boot up using the Apple Hardware Test (AHT) or Apple Diagnostics.This mode lets you use any Mac with a FireWire or Thunderbolt port as the source for your boot-up system. Hold the "t" key during startup to boot in Target Disk Mode.Hold the Option + "n" key to boot from the NetBoot default startup volume.NetBoot volumes can be created with OS X or macOS Server, allowing you to boot from, install the Mac OS, or restore the Mac OS from the server on your local network. Hold the "n" key during startup to boot from a networked computer that has a NetBoot volume.If you have created a bootable Mac OS installer on a flash drive, this is an easy way to boot from the installer. Hold the "c" key during startup to boot from a bootable CD, DVD, or USB flash drive.In some cases, an alternate OS may prevent the Mac's normal boot manager from running. You may find this useful if you have your Mac set to boot to a non-Mac OS volume, such as Windows or Linux. Hold the "x" key during startup to force the Mac to boot from OS X or macOS, no matter which disk is specified as the startup disk. ![]()
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