Follow the on-screen instructions to finish installing the software update, which should take around half an hour depending on the spec of your Mac. This can be obtained from the Mac App Store using a machine that supports High Sierra, or. Once the download has finished, you'll see a macOS High Sierra installer launch. Things youll need: - A copy of the macOS High Sierra Installer App.Download progress will appear in your Purchases tab. Get a USB flash drive with at least 8 GB storage space. Click Download to initiate the download, and fill out your Apple ID information if prompted. If the High Sierra opens after downloading from App Store, quit it.Once you've backed up your Mac, launch the App Store (located in /Applications) and search for macOS High Sierra.Wait for the Time Machine backup to complete before continuing with the macOS High Sierra installation.įollow these instructions to install the macOS High Sierra update on your Mac. A progress bar will appear in the Time Machine system preference pane. High Sierra (version 10.13) is the fourteenth major release of macOS, considering to compatibility and security, youd better upgrade to the MacOS High Sierra.If not, open System Preferences > Time Machine and click Select Backup Disk.An alert may appear asking if you want to use the drive to backup your Mac. How to update a Mac running macOS High Sierra or earlier Unlike recent macOS, High Sierra and earlier versions can’t be installed directly from the Software Update pane in the Mac menu.Choose a new hard drive, or one that you don't mind erasing.

Connect an external hard drive to your Mac. If you want to update macOS High Sierra to macOS Mojave, by default macOS Mojave can not show in Apps Store.However, we recommend a full back up before you install it.Īpple makes it very easy to back up your Mac using Time Machine, so there is no excuse not to create a Time Machine backup before installing macOS High Sierra.įollow these steps to back up your Mac using Time Machine.

How to update mac to high sierra