If you want to do that, and I strongly suggest you do, please write back for instructions. Lastly, you would be far better off fixing what's wrong with your Mac than to downgrade to an earlier operating system. Beware that if any of them have been updated to work with Sierra, they may no longer work with El Capitan or earlier OS X versions. Then, restore your files from the backup. If that is El Capitan, you can use this link: Get El Capitan from the App Store.
#Downgrade mac os time machine install#
Finally, download and install the operating system you wish to install from the Mac App Store's Purchased page.The three ways of downgrading macOS to Catalina are also suitable for downgrading from Big Sur to Mojave or High Sierra, from Monterey to Big Sur. Downgrade to Catalina via a bootable installer. Downgrade to Catalina in macOS Recovery mode. That is where you will be prompted for an Apple ID (although you can skip that step if you choose). Downgrade to Catalina with Time Machine backups (If had) 2. Install that version of OS X, following its instructions.If you are prompted for an Apple ID before it even begins to install, return to Step 1.It will not require an Apple ID to install.That reinstalls the operating system installed on your Mac when it was new.Then, select Disk Utility to completely erase your startup volume.Ĭhoose one of the Mac OS Extended (Journaled) formats.If you do not boot Internet Recovery, you will boot into the existing Recovery Partition, which will only allow you to reinstall your existing operating system.You will need a viable Internet connection, preferably a fast one, and one that does not require a "login screen" for you to connect to the Internet.
#Downgrade mac os time machine how to#
To learn how to use Time Machine read Use Time Machine to back up or restore your Mac.Īfter you have that backup and are satisfied with your ability to recover its files - or you decide that you do not need or want any of the information on that Mac, and understand that it will be irretrievably and forever lost, continue with the steps below. After selecting the language, select 'Restore from Time Machine Backup.' from the Utilities menu Select the attached Time Machine drive and then the desired backup to restore. Please refer to macOS Sierra: Revert to a previous macOS version.Īssuming you have no Time Machine or equivalent backup of your essential files and other documents, create one now because you will need to completely erase that Mac in order to downgrade its operating system from Sierra to any earlier version. Here is a brief step-by-step process: With the Time Machine drive attached, startup from the Leopard DVD.
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