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.
#Alt key on mac windows#
If you're using a keyboard made for a PC, such as a keyboard with a Windows logo, try a keyboard made for Mac.
#Alt key on mac mac#
Mac menus and keyboards often use symbols for certain keys, including modifier keys: On keyboards made for Windows PCs, use the Alt key instead of Option, and the Windows logo key instead of Command. Or use your built-in keyboard or a wired keyboard. For example, to use Command-C (copy), press and hold the Command key, then the C key, then release both keys. 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 recognized and ready for use. You might need to wait a few seconds before pressing the keys, to give your Mac more time to recognize the keyboard as it starts up. Then press and hold the keys as your Mac starts up. Then press the power button to turn on your Mac. Press and hold all keys in the combination together, not one at a time.If a key combination doesn't work at startup, one of these solutions might help: Eject (⏏) or F12 or mouse button or trackpad button: Eject removable media, such as an optical disc. Disabled when using a firmware password.Command-V: Start up in verbose mode. Disabled when using a firmware password.To do a hashtag on a UK Mac, press Alt + 3. T: Start up in target disk mode. Disabled when using a firmware password. Even if you do want to type a on a UK keyboard you have to use the Option key (on some older keyboards the Option key is labeled Alt, as below).Disabled in macOS Mojave or later, or when using a firmware password. Command-S: Start up in single-user mode.To use the default boot image on the server, press and hold Option-N instead. Disabled when using a firmware password. N: Start up from a NetBoot server, if your Mac supports network startup volumes.Or use Option-D to start up to this utility over the internet. Disabled when using a firmware password. D: Start up to the Apple Diagnostics utility.If your Mac is using a firmware password, it ignores this key combination or starts up from macOS Recovery. On Apple keyboards it generally sits between the Command and the Ctrl. Option-Command-P-R: Reset NVRAM or PRAM. The Option key on a Mac, otherwise known as the Alternate key, is usually labelled with the letters Alt and the symbol.If your Mac is using a firmware password, you're prompted to enter the password. Option (⌥) or Alt: Start up to Startup Manager, which allows you to choose other available startup disks or volumes.macOS Recovery installs different versions of macOS, depending on the key combination you use. If your Mac is using a firmware password, you're prompted to enter the password. Or use Option-Command-R or Shift-Option-Command-R to start up from macOS Recovery over the internet. Command (⌘)-R: Start up from the built-in macOS Recovery system.
Keep holding until the described behavior occurs. To use any of these key combinations, press and hold the keys immediately after pressing the power button to turn on your Mac, or after your Mac begins to restart.
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