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#Target disk mode thunderbolt how to#
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If your Mac has a T2 security chip, you can release the keys after the Apple logo appears and disappears on screen for the second time.įor more information, here is a video about SMC, PRAM & NVRAM reset.

Wait 20 seconds and release the keys or, if your Mac plays a startup chime, release the keys after the second chime.

Shutdown your Mac then press the power button while holding Command-Option-P-R.

If your Mac is having problems with sound volume, display resolution, or time zones, resetting the NVRAM can help.

Choose the volume you want to boot from by clicking on it when the options appear on screen.

Hold down the Option (Alt) key while you start up your Mac.

You can also use this method to startup up from a Time Machine backup if it’s connected to your Mac. The Startup Manager allows you to choose which bootable volume to start up from if you have more than one connected to your Mac.

If you want to reinstall the version of macOS that came with your Mac or the nearest one that’s still available, hold down Shift-Option-Command-R.

#Target disk mode thunderbolt install#

To install the latest version of macOS that is compatible with your Mac, hold down Option-Command-R instead.

This option allows you to reinstall the latest version of macOS that was installed on your Mac.

Hold down Command-R while starting your Mac to access the built-in recovery tools, including Disk Utility.

MacOS Recovery mode is used to install and reinstall macOS operating system.

#Target disk mode thunderbolt how to#

How to access Mac boot modes and what they do: Here is a list of the different Mac startup keys and boot commands:

Or you can boot into Recovery Mode and run Disk Utilities to repair your disk, or, at worst, reinstall macOS. If your Mac won’t start up in regular boot mode, or if it starts up but behaves erratically, you need to be able to diagnose the problem and fix it.ĭifferent boot modes allow you to, for example, start your Mac with only the bare minimum of extensions loaded, so you can figure out if they are at the root of the problem. The simple answer is: to allow you to troubleshoot problems. Why are there different Mac boot options?

But did you know there are several other Mac boot commands? These useful combinations help start up the Mac properly and fix system errors. We all know that when you want to start up your Mac, you just press the power button and when you want to restart, you visit the Apple menu and choose Restart from there. But to help you do it all by yourself, we’ve gathered our best ideas and solutions below.įeatures described in this article refer to the MacPaw site version of CleanMyMac X.

#Target disk mode thunderbolt download#

So here's a tip for you: Download CleanMyMac to quickly solve some of the issues mentioned in this article.