How to Downgrade new MacOS Mojave to MacOS High Sierra


Many Apple customers have upgraded their MacOS with Mojave. It is the succeeding version of Mac Operating System. The new version is offering some new features, but it is full of bugs. The Mac users installed it in their devices for test purpose, but some of them complained that after installing Mojave, their system is getting a glitch and having inappropriate behavior.

According to the users, they are trying to downgrade the Mojave beta to Mac High Sierra to get a more comfortable version for Mac. There are some reasons like freezing, and unwanted launching of apps has caused the users to downgrade Mojave. If you are feeling like a victim, then don’t bother much, as the guide will show to downgrade the MacOS Mojave to MacOS High Sierra.

Before performing the task, you must back up all the data so that after the process of erasing everything from your system, you can restore it without pulling your hair.

Now, let’s begin with the process and downgrade the Mojave to High Sierra.

  1. Go to the left corner of your Mac screen and click on Apple icon.
  2. Select Restart from the menu.
  3. While the system is rebooting, press and hold Command + R keys.
  4. The keys will take you to the Recovery Mode.
  5. In the OS X Utilities, there are options in the list.
  6. Select Disk Utility from the list.
  7. Now, select Continue.
  8. Click the Startup Disk.
  9. Now, click Erase from top of the display.
  10. In the next display, enter the name of the file you want to eliminate.
  11. If you are an HFS+ user, then select MacOS Extended (Journaled).
  12. In case your Mac is using APFS, Apple File System, then select APFS.
  13. Now, select GUID Partition Map.
  14. Click Erase.
  15. Now, the system will be erased. Go to the left corner at the top of OS X Utilities and click to open a drop-down
  16. Now, quit Disk Utility.

Congratulations, you have successfully removed Mojave from your device. Now, it is time to reinstall High Sierra in the system.

How to reinstall MacOS High Sierra

  1. Connect Mac to an internet
  2. Again from the left corner at the top, click the Apple icon.
  3. Now, select Restart.
  4. While rebooting, press and hold Option
  5. Now, it will take you to the options to select the startup disk.
  6. Select a bootable drive with your MacOS High Sierra.
  7. Now, the installation will begin.
  8. Then, click Continue in the installation window of MacOS High Sierra.


Stephen Strange is a self-professed security expert; he has been making the people aware of the security threats. His passion is to write about Cybersecurity, cryptography, malware, social engineering, internet and new media. He writes for Norton security products at


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