Connect the Time machine drive that contains the most recent Yosemite backup to your Mac system and then click on “Continue”. Step 4: Go to the OS X Utilities menu, and choose the “Restore from Time machine Backup”.Step 3: Reboot the Mac with Mac OS X El Capitan and simply hold down the Command +R key to enter your recovery mode, and you can simply booth from the Yosemite installer that has been installed already.Install the required system updates before you downgrade your OS to Yosemite, which will ensure that the system is returned to its factory setting and there wouldn’t be a class of software functioning when you finally downgrade to Yosemite. Step 2: Go to the “Apple Menu” and click on software update.Make sure you download and install the Yosemite OS before you go to the next step. If the latest Mac OS X El Capitan is causing some problems when you install an update, you need to manually download and install the Mac OS X El Capitan. Step 1: Archive and install your Mac OS X El Capitan.If you have any questions, please leave them in the comment box below.Follow These Simple Procedures to Finish the Downgrade Process: The whole process took me over two hours but it varies depending on your computer and internet speed. After the installation is finished, complete the initial setup and you are done. Now select your Mac hard drive and press Install.Ģ3. 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. 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 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. 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. 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.
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