Not everyone lovesmacOS Sonoma(the latest version of macOS) and there are plenty of reasons you might want to go back to an older edition. The latest macOS might be missing key features you previously enjoyed, for example, or it might have compatibility issues with your apps.

Difficulty

What You Need

A Time Machine backup containing an older version of macOS (optional)

An empty USB drive (formatted for macOS) with enough space for the macOS installer (optional)

There are a few ways to uninstall the latest version of macOS and downgrade to an older edition, and we’ll take you through them in this guide. Before we start, though, there is something very important you need to do:back up your Mac.

For one thing, that’ll get you out of a tight spot if something goes wrong. As well as that, some of the methods we discuss in this article involve either erasing your Mac’s drive or rolling back to an earlier point in time. In both cases, you could lose recent files. To prevent that happening, save your files to a separate location, whether that’s to the cloud or to one of thebest external hard drives.

Now that you’ve done that, you also need to know which versions of macOS your Mac can run. As a rule, it’s unlikely to be able to run anything older than the edition of macOS that was installed when you bought your Mac. It should be fine to roll back to anything that came out within a few years of your Mac’s release, though.

With all that done, let’s get started.

Method 1: Restore from an older Time Machine backup

Step 1:Before you begin, note that restoring from a Time Machine backup will mean you lose any data created after the backup was made, so ensure you have newer documents saved somewhere on a different Mac, an external drive, or in cloud storage.

Step 2:Restart your Mac in Recovery mode. To do this, shut down your Mac, then on an Apple silicon Mac, turn it on bypressing and holding the power buttonuntil you see the message “Loading startup options.” On an Intel Mac, turn on your Mac then immediately pressCmd+Rtogether until you see the Apple logo.

Step 3:SelectOptions > Continueand wait for the progress bar to fill up. Log in with an admin account, then select Restore fromTime Machine > Continue > Continue.

Step 4:Pick a backup from before you upgraded to macOS Sonoma (i.e. a backup running macOS Ventura or earlier). Now chooseContinueand let your Mac restore from the backup. You Mac will install the older macOS version as part of the backup restoration process.

Method 2: Run a bootable installer

Step 1:Apple still makes older versions of macOS available on the App Store. you’re able to download one, load it onto a USB drive and install it from there. However, this method requires using Terminal and erasing your Mac’s SSD, so make sure you’ve backed up your files somewhere (and are comfortable using Terminal) before starting.

Step 2:Download the version of macOS you want from the App Store using one of the following links:

  • macOS Ventura
  • macOS Monterey
  • macOS Big Sur
  • macOS Catalina
  • macOS Mojave

Step 3:In this example, we’re going to use macOS Ventura. When it finishes downloading, do not run the installer. Instead, open your Applications folder in Finder and check the installer is there.

Step 4:Plug a USB drive into your Mac. You will need to make sure it has enough space for the installer and is completely empty before beginning. Name the drive “macOS installer” or something equally memorable.

Step 5:Open the Terminal app on your Mac and type in the following command:sudo /Applications/Install\ macOS\ Ventura.app/Contents/Resources/createinstallmedia –volume /Volumes/MyDrive

Replace “Ventura.app” with the name of the installer file, and “MyDrive” with the name of your USB drive. When you’re done, pressReturn. You can close Terminal when the process has finished.

Step 6:Now open the Settings app and pickGeneral>Startup Disk, then select the USB drive with the macOS installer on it.

Step 7:Shut down your Mac and boot into Recovery mode bypressing and holding the power buttonuntil you see “Loading startup options” (on an Apple silicon Mac), or by pressing and holdingCmd+Ras soon as you start your Mac (on an Intel Mac).

Step 8:Now pickOptions>Continue. Log in with an admin account, then clickDisk Utility>Continue. From here, choose your Mac’s startup disk and pickErase. This will delete everything on the drive, so it’s your last chance to ensure your files are safely backed up. Wait for the process to finish, then clickDisk Utility>Quit Disk Utilityfrom the menu bar.

Step 9:Now pickReinstall macOSfrom the menu and follow the on-screen instructions.

Method 3: Revert your Mac to the operating system it shipped with (Intel only)

Step 1:If your Mac was running an older version of macOS when you bought it, you may roll it back to that version. Note that this only works on Intel Macs, so if you have an M-series Apple silicon chip inside your Mac, this method won’t work.

Step 2:Shut down your Mac, then start it up again and immediately holdShift+Opt+Cmd+Rtogether.

Step 3:Once the Recovery screen loads, chooseReinstall macOS > Continueand follow the on-screen instructions. Then pick your startup disk and clickInstall.

Step 4:Wait for your Mac to finish installing the version of macOS that came with your Mac.

Now that you’ve managed to downgrade from macOS Sonoma to an older version of Apple’s Mac operating system, you should be good to go. If you ever want to upgrade to a more recent version, you’re able to either download the installer from the App Store or open the Settings app and chooseGeneral>Software Updateand install the update from there.