If you decide the macOS High Sierra beta just isn’t working for you, you can downgrade back to Sierra.
The public beta for macOS High Sierra is here — but just because you take a new operating system for a whirl doesn’t mean you’re ready to commit full-time just yet. If you’ve decided you’d rather return to macOS Sierra, you can downgrade with just a few steps. It is a bit of a complex process, but if you follow the steps you’ll be back to your old setup in no time.
Note: If you are reading this article on the Mac that you want to downgrade on, switch to another device or print this page before continuing so you can read along as you go.
Step 1: Back up your Mac
This process will erase macOS High Sierra from your hard drive entirely. That means any files, programs, or documents you’ve been working on while using macOS High Sierra will also be erased if you don’t back them up first. Use an external hard drive or a cloud-based program like DropBox, OneDrive, or iCloud. If you don’t save these important files somewhere off of your computer you will lose them.
Step 2: Create a bootable drive of macOS Sierra
Before you erase macOS High Sierra from your computer, download macOS Sierra from the Mac App Store. It should be in your purchase list, or you can simply search for it in the Mac App Store. You’ll need a copy of macOS Sierra in order to downgrade from macOS High Sierra. When the final version of macOS High Sierra goes live, macOS Sierra will no longer be available in the App Store, so make sure you download Sierra before High Sierra launches.
Note: Making a bootable installer requires the use of Terminal. If you…
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