Installing and updating to MacOS Sierra takes a little over an hour or so, but it could be longer or faster with some Macs depending on performance and prior Mac OS X version.

Go through the simple update process, choose the disk to update and install.

Download the macOS Sierra installer from the App Store.

Did you backup the Mac first? Don’t skip a backup.

You’ll want to backup before updating to macOS Sierra, whether that is configuring and using Time Machine or using a different solution is your choice, but don’t skip a backup.

If you want to make a macOS Sierra USB install drive be sure to quit out of the application installer first, otherwise you’d have to re-download the Sierra installer from the Mac App Store. The download is about 5 GB and the installer launches immediately. Get macOS Sierra from the Mac App Store here.The link below jumps directly to the App Store page to download Sierra:

Whether you’re on a final GM build or an earlier version of Mac OS X, the installer is available in the same location. Download macOS SierraĪll Mac users can download macOS Sierra now from the Mac App Store. Most modern Macs built after 2010 support the release, but you can check the list of Macs compatible with macOS Sierra here if you are uncertain about your machine. Some of the major new features of macOS Sierra include having Siri on the desktop, an ability to unlock and login to a Mac using an Apple Watch as authentication, enhanced iCloud integration with the file system, a cross Mac-to-iOS clipboard feature, Picture in Picture video mode, Apple Pay in Safari, greater compatibility with iOS 10 devices and features, as well as many other smaller improvements and feature enhancements.

Apple mac os 10.12