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. Keep holding until the described behavior occurs.
- Command (⌘)-R: Start up from the built-in macOS Recovery system. Or use Option-Command-R or Shift-Option-Command-R to start up from macOS Recovery over the Internet. macOS Recovery installs different versions of macOS, depending on the key combination you use while starting up. 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. If your Mac is using a firmware password, you're prompted to enter the password.
- Option-Command-P-R:Reset NVRAM or PRAM. If your Mac is using a firmware password, it ignores this key combination or starts up from macOS Recovery.
- Shift (⇧): Start up in safe mode. Disabled when using a firmware password.
- D: Start up to the Apple Diagnostics utility. Or use Option-Dto start up to this utility over the Internet. Disabled when using a firmware password.
- N: Start up from a NetBoot server, if your Mac supports network startup volumes. To use the default boot image on the server, hold down Option-N instead. Disabled when using a firmware password.
- Command-S: Start up in single-user mode. Disabled in macOS Mojave or later, or when using a firmware password.
- T: Start up in target disk mode. Disabled when using a firmware password.
- Command-V: Start up in verbose mode. Disabled when using a firmware password.
- Eject (⏏) or F12 or mouse button or trackpad button: Eject removable media, such as an optical disc. Disabled when using a firmware password.
Click the System Preferences icon in the Dock and choose Network. The Network dialog opens. The Belkin USB-C to Gigabit Ethernet Adapter allows you to connect to wired networks with speed and endurance where wireless connectivity is unreliable or inconsistent. Perfect for MacBook with USB-C port or MacBook Pro with Thunderbolt 3 (USB-C) ports, it supports 10/100/1000BASE-T and has been designed and tested according to Belkin's. This Insignia™ NS-PU98635 adapter features a USB 3.0 interface on one side and a Gigabit Ethernet interface on the other, so you can easily add a wired Ethernet connection to your compatible PC or Mac laptop or Ultrabook.
Step 10: Now plug-in your USB Ethernet Adapter with a live ethernet cable. Open System Preferences and go to Network. Step 11: Press the + button in the bottom right and select USB 2.0 10/100M Ethernet Adapter and then click Add. Buy USB 3.0 to Ethernet Adapter, Plug & Play Syncwire 10/100/1000 Mbps RJ45 LAN Gigabit Network Adapter for MacBook, iMac, HP, Lenovo, Dell, Surface Pro, Windows Mac OS Linux & More: USB Network Adapters - Amazon.com FREE DELIVERY possible on eligible purchases.
If a key combination doesn't work
If a key combination doesn't work
If a key combination doesn't work at startup, one of these these solutions might help:
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- Be sure to press and hold all keys in the combination together, not one at a time.
- Shut down your Mac. Then press the power button to turn on your Mac. Then press and hold the keys as your Mac starts up.
- Wait a few seconds before pressing the keys, to give your Mac more time to recognize the keyboard as it starts up. Some keyboards have a light that flashes briefly at startup, indicating that the keyboard is recognized and ready for use.
- If you're using a wireless keyboard, plug it into your Mac, if possible. Or use your built-in keyboard or a wired keyboard. If you're using a keyboard made for a PC, such as a keyboard with a Windows logo, try a keyboard made for Mac.
- 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.
Remember that some key combinations are disabled when your Mac is using a firmware password.
Learn more
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- Learn what to do if your Mac doesn't turn on.
- Learn about Mac keyboard shortcuts that you can use after your Mac has started up.
