How to Downgrade macOS Ventura to Monterey

Yes, you can downgrade from macOS 13 Ventura back to macOS Monterey, but the process requires completely erasing your Mac's internal startup disk. Because macOS does not support an automatic in-place rollback, returning to an earlier version requires preparing a full backup of your personal files, wiping your drive using Disk Utility, and reinstalling Monterey using either a pre-upgrade Time Machine backup or a bootable USB drive.

Step 1: Back Up Your Files

Downgrading will delete everything on your Mac. Copy all essential documents, photos, and files to an external hard drive or a cloud storage service like iCloud Drive or Google Drive. Do not rely entirely on a Ventura Time Machine backup, as Ventura backups cannot be fully restored onto macOS Monterey.

Step 2: Choose Your Downgrade Method

Method A: Using a Previous Time Machine Backup

If you created a Time Machine backup while your Mac was running macOS Monterey prior to installing Ventura, this is the simplest method:

  1. Connect your Time Machine drive to your Mac.
  2. Restart your Mac into Recovery Mode:
    • Apple Silicon (M1/M2): Turn off your Mac, then press and hold the power button until "Loading startup options" appears. Select Options and click Continue.
    • Intel Mac: Turn on your Mac and immediately hold Command + R until the Apple logo appears.
  3. Select Restore from Time Machine in the Recovery window and click Continue.
  4. Select your backup disk and choose the most recent backup created under macOS Monterey.
  5. Follow the on-screen prompts to erase your disk and restore your system.

Method B: Using a Bootable USB Installer

If you do not have a Monterey Time Machine backup, you must create a bootable USB drive:

  1. Download Monterey: Open the Mac App Store, search for "macOS Monterey," and download the installer. Quit the installer if it opens automatically.
  2. Prepare the USB: Connect a USB flash drive (at least 16 GB) and format it as Mac OS Extended (Journaled) using Disk Utility, naming it "MyVolume".
  3. Create the Installer: Open Terminal and run the following command: sudo /Applications/Install\ macOS\ Monterey.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume
  4. Enter your administrator password and press Return. Wait until the process finishes.

Step 3: Erase Ventura and Install Monterey

  1. Keep the bootable USB plugged in and restart your Mac into the boot manager:
    • Apple Silicon: Press and hold the power button until the startup options appear. Select Install macOS Monterey and click Continue.
    • Intel Mac: Hold the Option (Alt) key immediately after turning on the Mac. Select the Monterey installer drive.
  2. In the macOS Recovery window, open Disk Utility and click Continue.
  3. Select your primary drive (usually named "Macintosh HD") and click Erase.
  4. Set the format to APFS and the scheme to GUID Partition Map, then confirm the erase.
  5. Close Disk Utility, select Install macOS Monterey, and follow the instructions to complete the installation.