How to Downgrade from macOS Catalina to macOS Mojave

by Sumit Sharma Digital Marketing Specialist

Unable to handle macOS Catalina? After a great performance and positive result of macOS Mojave, Apple has released the developer beta version of macOS Catalina for the test. macOS Catalina is the upcoming operating system for Mac. However, it is still in beta version. Users with a developer account can try the beta version on their Mac. As the OS is still in beta version, there could be many risks of using it now on a device. But, everyone wants to get or try everything for first, if you’ve also taken this risk and upgraded your Mac to macOS Catalina and now want to downgrade back to macOS Mojave, then the procedure is little long but safe, here it is.

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How to downgrade from macOS Catalina to macOS Mojave

If you want to downgrade safely, then you need to follow these four steps.

  1.     Create a backup of your Mac
  2.     Make an installer drive of macOS Mojave
  3.     Delete macOS Catalina from your Mac
  4.     Install macOS Mojave

The procedure is a little long and time taking, but you’ll not lose your relevant data or face any other problems.

Create a backup of your Mac

When you remove masOS Catalina from your desktop, this will erase everything from the hard drive. Deleting the operating system removes complete data from the device, including your documents, files, software, and games from the device. If you don’t want to lose your critical files like images, videos, or documents, then create a complete backup first. You can make a backup of your Mac online by using a cloud service like iCloud, OneDrive, or DropBox as well as offline with an external drive of sufficient space. Once you create a backup of your Mac, you can proceed to the next step.

Make an installer drive of macOS Mojave

Now, you have to create an installer drive of macOS Mojave. It is the important step of the procedure because without an installer drive you can’t delete installed Catalina from your Mac and reinstall macOS Mojave. Therefore, before removing Catalina, you have to create an installer drive, visit the Mac App Store and download macOS Mojave into an external drive. After creating a bootable drive with Mojave, you can proceed to delete process.

Delete macOS Catalina from your Mac

Now, you’ve to erase your device hard drive to reinstall macOS Mojave. Before you start, make sure you have successfully created a backup of your Mac.

  1.     Turn on your Mac and connect it to the internet, if already not.
  2.     Click the ‘Apple’ logo at the top left corner on the desktop.
  3.     Click ‘Restart’ in the menu.
  4.     Press and hold down the ‘Command + R’ button until the Mac reboots. It also put your Mac into Recovery Mode.
  5.     Now, from the “OS X Utilities” screen, select ‘Desk Utility.’
  6.     Click ‘Continue’ at the bottom.
  7.     Then select the ‘Startup Disk.’
  8.     And open the ‘Erase’ tab from the top center of the window.
  9.     Type a name of the file you want to delete.
  10.    Click on format list and select ‘Mac OS Extended (Journaled),’ if you’ve Mac with HFS+. Or select ‘APFS’ if you’ve Mac with APFS.
  11.   Select ‘GUID Partition Map’ if Scheme option is available.
  12.    Then click on ‘Erase.’ This will start deleting the installed OS from your Mac.
  13.    Wait until the process completes.
  14.    After finish removing, open the dropdown menu from the top left corner of the window.
  15.    Select ‘quit Disk Utility’ to return to “OS X Utilities” screen.

Now, you’ve reached the last step, reinstalling macOS Mojave. Use the below steps to complete it.

Install macOS Mojave

Here is how to install macOS Mojave on Mac.

Important: If your Mac computer comes with macOS Mojave installed, then you can easily install it by pressing and holding ‘Shift + Option + Command + R’ buttons. If not, then use below steps.

  1.     Make sure your Mac have an internet connection.
  2.      Insert the bootable installer drive you made in step 2.
  3.     Restart your Mac.
  4.     Press and hold down the ‘Option’ key to go to the Startup disk selection screen.
  5.     Select the bootable installer drive of macOS Mojave from the options list. This starts installing the Mojave.
  6.     Click ‘Continue’ on the installation window.

Once the installation process completes, you’ll be able to use your Mac again with macOS Mojave.

Billy Mark 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 Mcafee products at

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About Sumit Sharma Senior   Digital Marketing Specialist

205 connections, 4 recommendations, 781 honor points.
Joined APSense since, October 15th, 2018, From Delhi, India.

Created on Jun 17th 2019 00:35. Viewed 592 times.


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