In this post, we’ll describe how to do a clean install of macOS 10.13 High Sierra.īefore we get started, make a decision as to whether you want to do a regular update or a clean install, because a regular update is much easier to perform than a clean install. What’s a clean install? That means that the hard drive is erased completely and reformatted, which removes not only the current Mac operating system but all data, files, applications, you name it… Just think of it as a brand new computer having the operating system installed on it for the first time.

Launch Install macOS Sierra Public Beta app, if it's not launched already.Sometimes it’s a good idea to do a clean install of a new Mac operating system version.

If it doesn't, or if you prefer to do it later, you open Install macOS Sierra Public Beta at any time via Spotlight or Launchpad, or from the Application folder in the Finder. The macOS Sierra installer will automatically open when it's downloaded. How to install the macOS Sierra public beta You can check the status in the Updates tab of the Mac App Store. The public beta update can take a long time to finish downloading, depending on the size.

Then, open the Mac App Store and click the Updates tab. If the latest public beta does not appear on the Updates list, restart your Mac. After the software has been downloaded, your Mac will automatically restart. Click Update to download and install the public beta software. When the installer is finished downloading, the Mac App Store will automatically open to the Updates section. Double-click the package to run the installer.Open the file from your Downloads window.Click the Download macOS Sierra public beta access utility button.Click on the macOS tab, if it's not highlighted already.Go to (opens in new tab), if you're not there already.The code is provided for you on the website, but is also automatically entered for you when you click to begin the process. How to enroll your Mac in the macOS Sierra public betaĭownloading the macOS Sierra public beta is done through the Mac App Store but requires a special code (like a promo or gift code).

Once you're signed up and signed in, it's time to start downloading.

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