How do I revert from Ventura to Monterey?

Many Mac users who have upgraded to macOS Ventura are now looking to revert back to macOS Monterey for various reasons. Reverting to an older operating system can be complicated, but is possible if done correctly. This guide will walk you through the full process of downgrading from Ventura to Monterey.

Back Up Your Data

The first step before making any major changes to your system is to ensure you have a complete backup. This allows you to restore your data if anything goes wrong during the downgrade process. Here are some backup options to consider before proceeding:

  • Use Time Machine to create a full system backup to an external hard drive or NAS.
  • Manually copy important files and folders to external storage.
  • Sync data to cloud storage like iCloud or Dropbox.
  • Create a bootable clone of your drive using SuperDuper or Carbon Copy Cloner.

Once you have backups in place, you can continue with confidence knowing your data is safe regardless of what happens during the OS revert.

Check Compatibility

Before downgrading, you’ll want to ensure your Mac and apps are compatible with macOS Monterey. Here are some key compatibility checks:

  • Monterey supports Macs from early 2015 or newer. Very old Macs may not be compatible.
  • Check app developer sites to ensure your critical apps support Monterey. Newer apps may require Ventura.
  • Use Rosetta to run Intel apps on Apple Silicon Macs. Rosetta is not compatible with Ventura.
  • Virtualization software may have issues reverting to Monterey. Test first if possible.

If your hardware and software are compatible, you can safely proceed with the downgrade. If not, you may need to reconsider and find alternative solutions.

Preparing for Installation

Once your Mac and apps check out, it’s time to get set up for installing the older OS. Follow these steps to ensure the process goes smoothly:

  1. Clean up your Mac by deleting unused apps and files to free up storage space.
  2. Close all open apps and documents to avoid potential issues.
  3. Connect your Mac to a power source so the battery doesn’t drain.
  4. Connect to a fast, stable internet connection for downloading the installer.
  5. Use Disk Utility to repair permissions and verify the disk has no errors.

You’ll also need to download the macOS Monterey installer from the App Store on another Mac if you don’t already have it. The installer will be needed for the next steps.

How to Download the Monterey Installer

Here is how to download the Monterey installer if you don’t already have it:

  1. On another Mac running Monterey, open the App Store.
  2. Search for “macOS Monterey” in the App Store search bar.
  3. Click the “Get” button and download the full installer.
  4. Locate the installer in your Applications folder once download completes.
  5. Copy the installer to a USB flash drive or external disk.

You now have the installer ready to use for reverting your Ventura Mac back to Monterey. Next you’ll boot from it to begin the downgrade.

Booting from the Installer

Follow these steps boot from the Monterey installer drive on your Ventura Mac:

  1. Connect the drive containing the installer to your Mac.
  2. Restart your Mac and hold down the Option key after hearing the startup chime.
  3. Select the external drive from the boot menu.
  4. When the installer opens, choose your language and proceed.

Your Mac will now boot from the installer where you can erase, reformat, and install Monterey cleanly. Be sure to select your main drive to install to.

Erasing the Drive

Once booted to the installer, you’ll want to reformat your drive before installing Monterey. This performs a clean install and avoids any issues.

  1. Open Disk Utility from the installer Utilities menu.
  2. Select your main drive in the sidebar.
  3. Click Erase in the toolbar and choose Mac OS Extended format.
  4. Name the drive and complete the erase process.

This will wipe your drive and leave it blank, ready for a fresh Monterey installation. Be sure your data is backed up first!

Clean Installing Monterey

With your drive erased and formatted, close Disk Utility and proceed with a new install of Monterey:

  1. Click Continue in the installer window.
  2. Select your erased drive as the destination.
  3. Click Install to begin the clean install process.
  4. Enter your admin password when prompted to complete installation.

Monterey will install fresh on your drive. This will take some time to fully complete. Let the process run until finished.

Restoring Your Data

Once Monterey finishes installing, you’ll be booted back to a fresh OS setup. Now you can migrate your data and settings:

  • Use Migration Assistant to transfer from a Time Machine backup.
  • Manually copy files and folders back to your Mac.
  • Sign in to iCloud and iTunes to sync data and settings.
  • Use app installers to reinstall apps like Office and Adobe CC.
  • Customize system preferences to match your previous setup.

Take time to fully restore your files, apps, and settings after the OS downgrade. Check that everything is working correctly once finished.

Downgrading Issues and Solutions

Although the process is straightforward for most, you may encounter issues when downgrading from Ventura to Monterey. Here are some potential problems and solutions:

Issue Solution
Mac won’t boot from installer Reset NVRAM before booting, ensure drive is compatible
Installation fails to complete Wipe drive fully with Disk Utility before installing
Apps or files missing after install Restore data from backups, redownload missing software
Features not working correctly Check Monterey compatibility, reinstall affected apps
iCloud data won’t sync Log out and back in to iCloud on the device

Be prepared to troubleshoot and problem-solve during the process. Having backups ensures you have options to get your Mac working correctly again.

Frequently Asked Questions

Here are answers to some common questions about downgrading from Ventura to Monterey:

Is it safe to revert to Monterey from Ventura?

Yes, downgrading is generally safe if you follow the steps correctly. Be sure to fully back up your Mac before making any changes.

Will I lose all my data and apps?

A clean install will wipe everything, but you can restore your data and apps from backups after downgrading.

Can I revert without wiping my drive?

It’s not recommended. A clean install avoids many issues that can happen when reverting an upgraded OS.

Does Monterey have all the same features as Ventura?

No, Ventura has newer features that aren’t in Monterey. Check what’s missing before you decide to downgrade.

Will older Macs have issues with Monterey?

Monterey still supports many older Macs from 2015 and later. But the oldest models may have problems downgrading.


Downgrading your Mac from Ventura to Monterey takes time and care, but can give you an optimized system if done properly. The keys are ensuring compatibility, wiping your drive fully before installing, and having good backups to restore from after. Expect the process to take several hours. Go slow and double check each step to avoid serious issues. Patience and care will get your Mac back on Monterey running smoothly.

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