macOS Sierra is Apple’s latest update to its Mac desktop operating system software. It is available to download for free on the Mac App Store. In this article we explain how to download and install macOS Sierra on your Mac. We’ll walk you through the install and update process, and guide you past the potential headaches and problems you may encounter.

If you’d like to find out a bit more about macOS Sierra first, read: macOS Sierra current version details and macOS Sierra vs Mac OS X El Captain

Before you perform any big update to your Mac you should back up your Mac and do some other housekeeping tasks. We strongly recommend you follow our tips for getting your Mac ready before you install macOS Sierra, you can read them below. [Jump to How to prepare your Mac for macOS Sierra].

At the very least you should create a back up. Luckily, Apple makes it easy to back up your Mac using Time Machine, so there is no excuse not to create a Time Machine backup before installing macOS Sierra. We have this article about how to back up your Mac using Time Machine. We also advise that you make sure you are on a trusted network – so avoid downloading software in hotels and cafes or any public networks.
How to install macOS Sierra on a Mac

Follow these instructions to install macOS Sierra, also known as macOS 10.12 on your Mac.

  1. Once you’ve backed up your Mac, launch the Mac App Store (see the Mac App Store icon below) and search for macOS Sierra.
  2. Click Download to initiate the download.
  3. Fill out your Apple ID information if prompted.
  4. Download progress will appear in your Purchases tab.
  5. Once the download has finished, you’ll see a macOS Sierra installer launch
  6. 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.

If you have already installed macOS Sierra and just want to install the latest update to that software you will find it under the Mac App Store updates tab. Find out what the latest version of the MacOS is here: MacOS Sierra latest: current version, latest updates, betas, and new features.

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