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How to Downgrade macOS 10.15

If you’ve in recent times upgraded to macOS 10.15 Catalina but the new operating system hasn’t worked for you for different reasons you can always downgrade macOS 10.15 to an earlier working operating system such as 10.14 Mojave. Note that if your Mac was bought with Catalina already installed downgrading it is virtually impossible. To downgrade from macOS 10.15 to macOS 10.14 you must have upgraded to Catalina from Mojave or other earlier version. The downgrading process doesn’t have to be complicated in any way. Here are a few pointers on how to do this.

Do You Really Need to Downgrade?

No one really wants to downgrade to an inferior macOS when they can use the latest and freshest with new add-ons. However, even while upgrading is a wonderful choice, it might cause problems such as affecting third party applications on your Mac, including device drivers for video or audio, among others. Go ahead with a downgrade from macOS 10.15 to macOS 10.14 if you’ve ascertained that the upgrade has actually led to diverse issues on your Mac hardware and software.

At times, the problem mightn’t be macOS Catalina itself but software compatibility complications. If software is incompatible, simply resolve the matter by updating it or deleting it from your device and then go ahead and re-install the application that works with Catalina.

Nonetheless, don’t just start the downgrade; it could be a general problem that Apple might have already addressed. For instance, there could be a new update already released that once installed easily corrects the problem. Where compatible or working fixes aren’t available you could wait just to hear about macOS Catalina update releases which Apple usually does soon after the release of an operating system.

Also, do ensure your Mac version is actually compatible with new 10.15 Catalina since a good number aren’t supported. Also, Apple announced that 32-bit application support will no longer be there in Catalina and you need to ensure that all your applications are 64-bit to avoid downgrading for nothing.

What You Need to Do before Downgrading macOS 10.15

Note that to downgrade from macOS 10.15 to macOS 10.14 you need to ensure your Mac has been erased, which means losing everything if you don’t back it all up. It’s important to back it up since it allows you to restore your Mac to what it was before the upgrade to Catalina was attempted. For those without Time Machine back up it’s important to have a snapshot of your plug-ins, applications and other software you might need to reinstall later. For software with licenses the license also need to be backed up or removed.

It’s important to ensure all copies or first copies of your documents have been backed up to the cloud or external derive.

How to Downgrade macOS 10.15

There are different ways to downgrade macOS from 10.15 to an older version. You can reinstall through bootable drive or the internet. If your Mac was shipped with macOS Mojave 10.14 the only thing you need to do is install Mojave’s latest version. However, if this option is unavailable to you then creating bootable installation from an external driver from a downloaded installer is another way, which is perfect for those with Macs that didn’t come with the macOS version you need to install.

Via Internet Access

Those with internet access and need to reinstall Mojave or original macOS that came with their Mac should do it easily. Firstly, ensure the hard drive has been erased for the older operating system to be installed. Note that to downgrade from macOS 10.15 back to macOS 10.14 via the internet erasing the hard drive and reformatting is a must and permanent. As such, ensure you’ve backed up your Mac as mentioned.

Step 1: Ensure the Mac is connected to the internet before immediately shutting it off

Step 2: While holding and pressing ⌘ + R do power on the Mac

Step 3: Select Disk Utility from the macOS Utilities dialogue box

Step 4: Choose the hard drive containing 10.15 Catalina and choose “Erase”

Step 5: Ensure you’ve named the hard drive on your Mac and choose “Mac OS Extended” before clicking “Erase”

Also, through Internet access method downgrade from macOS 10.15 back to macOS 10.14 by:

Step 1: Start by powering on the Mac while holding and pressing Shift + Options +⌘ +R effectively booting the device to a recovery mode via the internet

Step 2: Select “Reinstall macOS” from the macOS Utilities dialogue box

Step 3: Click “Continue” and in macOS Utilities select “Restore from Time Machine Backup”

Step 4: Once you’ve chosen Time Machine do choose the backup time and date you need restored and follow prompts to complete

Via Bootable Drive

If you can’t use the internet process a bootable drive will do just fine. macOS installer need to be downloaded first and copied to your USB memory thumb stick or external hard drive.

Step 1: In App Store, select Purchased and select to download macOS 10.14 Mojave. Once the download process is completed the installer will be ready to launch.

Step 2: Ensure the connected external hard drive (over 16GB) is connected to the Mac. On “Disk Utility” choose drive and then “Erase”. You’ll be prompted to give the drive a name. Do it and then choose “Mac OS Extended” before clicking “Erase”.

Step 3: on “Utilities” launch the Terminal. Check to ensure the installer is already in “Applications” folder. Also note the exact name you gave your bootable drive. Simply replace “YOURDRIVE” with the external boot drive’s name that was erased / formatted.

Do downgrade from macOS 10.15 via bootable external drive by:

Step 1: First powering on the Mac while instantaneously holding and pressing “Option” tab

Step 2: Prompts will come and you should double click the bootable drive entitled the same as the macOS installer

Step 3: Complete the reinstallation process by following the instructions that come up on the screen and complete setting up your device

Best PDF Editor for macOS 10.15 in 2019

Whether you’re powering your Mac using macOS 10.14 Mojave or Catalina you also have the option of using the most usable, popular and efficient easy to use PDF editor in the planet, PDFelement for Mac. It helps you transform your PDF documents, change them into formats that you want while editing to your liking using hundreds of wonderful tools and features. You can even use PDFelement for Mac to transform paper documents in your office into editable PDFs and share them across the board with coworkers or members of your team.

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Why PDFelement for Mac?

  • It’s compatible with all macOSs, including 10.14 Mojave and 10.15 Catalina
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Home > macOS 10.15 > How to Downgrade macOS 10.15
Posted by to macOS 10.15
Published: Sep 13,2016 18:20 pm / Updated: Nov 15,2016 17:54 pm
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