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- Downgrade mac os sierra without erasing mac os x#
- Downgrade mac os sierra without erasing software license#
- Downgrade mac os sierra without erasing install#
- Downgrade mac os sierra without erasing code#
Its most recent macOS Monterey 12.0.1 installer weighs in at about 12 GB - nearly triple in size. The OS X Lion 10.7 installer was about 4.72 GB. The size of its Mac operating system installers has grown considerably over those 10 years too.
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Downgrade mac os sierra without erasing mac os x#
It released Mac OS X Lion (10.7) in 2011 and every year since has released a new major version.
Downgrade mac os sierra without erasing software license#
Hit Continue and accept the macOS software license agreement.Ģ2. Once the process is completed, restart your computer and hold down the Option key while the computer boots up.ġ9. Make sure the format is APFS and press Erase.ġ8. Select your Macintosh HD under Internal and press Erase.ġ7.
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On the next screen, go to Disk Utility.ġ6. You should see a Language selection screen - if you do not see this screen, restart your computer and hold down Command + r on your keyboard to try again.ġ5. Restart your computer and hold down Command + r on your keyboard while the computer boots up.ġ4. Once it is complete, you can exit Terminal.ġ3. Enter your password for your computer and press Enter.ġ2. Sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia -volume /Volumes/boot -applicationpath /Applications/Install\ OS\ X\ El\ Capitan.appġ0. Sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/boot -applicationpath /Applications/Install\ macOS\ Sierra.app Sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/boot -applicationpath /Applications/Install\ macOS\ High\ Sierra.app
Downgrade mac os sierra without erasing code#
Copy and paste the following code that corresponds to the macOS version you are downgrading to into terminal and press Enter: Name your drive “ boot” (all lowercase without the quotations) and select Mac OS Extended (Journaled) as the Format. Under External, select your USB flash drive and press Erase.Ħ. Connect your USB flash drive to your computer and open Launchpad > Other > Disk Utility.ĥ. Now we will need to create a bootable USB.
Downgrade mac os sierra without erasing install#
Don’t worry, this is normal since the system will not just let you install an older OS.Ĥ. If you get prompted with “This copy of the “Install macOS” application is too old to be opened on this version of MacOS”, hit Quit. Press Download - this step may take awhile since the download file is huge.ģ. Download the macOS you want to downgrade to from the App Store. In this tutorial, I will be downgrading from macOS Mojave to macOS High Sierra, but the instructions are the same if you are trying to downgrade to another macOS version.
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You will also need an empty USB flash drive for this tutorial. Please backup all your files before you begin. In this tutorial, I will be downgrading from macOS Mojave to macOS High Sierra, but you can downgrade to other macOS versions as well by following the instructions.īefore we begin, please note that in order to downgrade macOS, you will need to reformat your hard drive - meaning you will lose all of your data. We provide a step-by-step guide with pictures of each step. Are you trying to downgrade your macOS? Follow our tutorial to get started.