Migrate Mac Data From a Time Machine Backup. Simply follow the prompts to begin the transfer. Your old startup disk should now appear as a source in Migration Assistant on your new 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. Select Utilities > Share Disk from the top menu bar.Some key combinations don't work when 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 recognized and ready for use. If requested, enter the password for an administrator account. So Im gonna use this Thunderbolt three USBC cable and connect one end to my MacBook 00:00:30 pro and. Press and hold the power button until Loading startup options appears. Heres two ways to enable Target Disk Mode using a Thunderbolt 3 USB-C cable to. On the Mac with Apple silicon, choose Apple menu > Shut Down. 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. Connect the two computers using a USB, USB-C, or Thunderbolt cable.Apple's actual documentation is a bit lacking in specifics. Then press and hold the key combination after pressing the power button to turn on your Mac. I believe USB Target Disk Mode requires the computer being put into Target Disk Mode to have a USB-C port which will then show both the Thunderbolt symbol and the USB symbol on the screen. If you can'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. Use USB-C cables with your Mac - Apple Support Table of Contents Use USB-C cables with your Mac If you have a Mac with Thunderbolt 3 (USB-C), Thunderbolt / USB 4, Thunderbolt 4 (USB-C), or USB-C ports, you can use cables to transfer data and connect your Mac to other devices and displays.Press and hold all keys in the combination together, not one at a time.

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