How to Download and Install macOS High Sierra

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Apple released the latest edition of macOS, version 10.13 High Sierra, so it's time to prepare your Mac for the update. High Sierra may be a relatively subtle update, performing a lot of changes to the background that will increase stability, but it also provides new privacy features in Safari and makes Photos a more easily browsable app.

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MORE: macOS High Sierra Review: A Deceptively Big Update

First, make sure your Mac is on this list of supported machines:

Next, check that the software you rely upon is supported by visiting the website of any company that makes your mission-critical apps. This is a big deal for antivirus software and system-backup utilities, as they operate differently, and might conflict with the new Apple File System (APFS). 

Now, back up your system to another location. There is nothing inherently risky about High Sierra, but we make a habit of backing up our personal systems before performing major updates.

Once your system is cleared to be updated, make sure you have an hour of time where you won't need it, as installing High Sierra on a brand-new 15-inch MacBook Pro took around 40 minutes, and might take more for a system with more applications and files. 

Now that you're ready, here's how to update to macOS 10.13 High Sierra.

1. Click the Apple icon in the top left corner.

screen shot 2017 09 26 at 12 3180701506442961.15 3180701506442961.58 pm 3180701506442961

2. Select App Store.screen shot 2017 09 26 at 12 3180701506442961.16 3180701506442961.02 pm 3180701506442961

3. Click macOS High Sierra.screen shot 2017 09 26 at 12 3180701506442961.16 3180701506442961.24 pm 3180701506442961

4. Click Download.screen shot 2017 09 26 at 12 3180701506442961.16 3180701506442961.29 pm 31807015064429615. Click Continue.screen shot 2017 09 26 at 12.33.28 pm

6. Click Agree.screen shot 2017 09 26 at 12.33.33 pm

7. You didn't scroll to the bottom (nobody does), so click Agree again.screen shot 2017 09 26 at 12.33.40 pm

8. Click Install.

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9. Enter your password and click Add Helper.screen shot 2017 09 26 at 12.33.50 pm

10. Click Restart.

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Sit back and enjoy the hour-long installation process. You'll need to enter your iCloud password once it's finished updating.

Author Bio
Henry T. Casey
Henry T. Casey,
After graduating from Bard College a B.A. in Literature, Henry T. Casey worked in publishing and product development at Rizzoli and The Metropolitan Museum of Art, respectively. Henry joined Tom's Guide and LAPTOP having written for The Content Strategist, Tech Radar and Patek Philippe International Magazine. He divides his free time between going to live concerts, listening to too many podcasts, and mastering his cold brew coffee process. Content rules everything around him.
Henry T. Casey, on
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2 comments
  • Owen Dett Says:

    I only get the flashing file folder with ? Had to restore from TC. What am I doing wrong?

  • omegatalon Says:

    2009 machines can still upgrade to this new High Sierra MAC OS; this would be like Microsoft offering WIN XP computer users a free upgrade to WIN 10 and one has to wonder why Microsoft didn't do this given WIN 10 can operate on very slow processors in configurations as small as 1GB system RAM and 16GB of mass storage.

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