#REINSTALL MACOS SIERRA MAC OS X#
#REINSTALL MACOS SIERRA INSTALL#
#REINSTALL MACOS SIERRA UPDATE#
#REINSTALL MACOS SIERRA SOFTWARE#

This kind of pirated software often contains viruses, adware, spyware and other digital nasties, so you may get more than you bargained for if you download macOS from anyone other than Apple! We’ll be covering these workarounds in the next section, so avoid the temptation to download this version of macOS from a third party.

#REINSTALL MACOS SIERRA MAC OS X#

If you want to downgrade to a version of macOS that you didn’t originally download from the App Store, or a version of macOS that was never available via the App Store (such as Mac OS X Snow Leopard) then there are some workarounds. In the best case scenario, you’ll want to downgrade to a version of macOS that you downloaded via the App Store, as this means you’ll be able to re-download the installer via the App Store. You’ll also need the version of macOS that you want to install. Just be aware that formatting this drive will wipe everything from it! If the USB drive contains anything that you want to keep, then make sure you move or copy it to a safe location before proceeding. If you don’t have a Time Machine backup, then downgrading is going to be more complicated, as you’ll need to create a bootable installer.įor the best results, you’ll need a USB flash drive with at least 12GB of memory.

Your Mac will now restore this backup, and downgrade you to an earlier version of macOS in the process!.

Choose the backup that you want to reinstate, which will typically be the last backup you created before updating macOS.

The next screen will display all of your backups.

On the ‘Restore from Time Machine’ screen, click ‘Continue.’.

In macOS Utilities, select ‘Restore from Time Machine Backup.’.

Release these keys as soon as you see the Apple logo.

Restart your Mac while holding down the ‘Command+R’ keys.

If the backup is stored on an external or network drive, then make sure this drive is available to your Mac.

Reinstalling an earlier backup will undo all the changes you made since creating this backup, so make sure all of your documents and data are stored somewhere safe before proceeding.

#REINSTALL MACOS SIERRA UPDATE#

If you create regular Time Machine backups (and you should!) then you may be able to reverse a macOS update by restoring a Time Machine backup that you created before installing that update. Choose your startup disk, and then select ‘Install.’.Once you see the macOS Utilities screen, select ‘Reinstall macOS’ and then click ‘Continue.’.Restart your Mac, while holding down the ‘Shift+Option+Command+R’ keys.

#REINSTALL MACOS SIERRA INSTALL#

Shift-Option-⌘-R – Install the macOS that came with your Mac, or the closest version still available.Easiest and Simplest Way to Upgrade Win10 to Win11 Bypassing Minimum Requirements Option-⌘-R – Upgrade to the latest macOS compatible with your Mac. Command-R is generally recommended, especially if you never installed macOS Sierra 10.12.4 or later.Ĭommand (⌘)-R – Install the latest macOS that was installed on your Mac. To start up from macOS Recovery, turn on your Mac and immediately press and hold one of the following combinations on your keyboard. And Shift-Opt-⌘-R will install the version of macOS that your Mac originally shipped with, provided it’s still available from Apple.

Opt-⌘-R is the interesting one, as this will install the latest version of macOS that will work on your Mac. I believe this means if you had, for example, High Sierra, but hadn’t upgraded it all the way to 10.13.6, you will get 10.13.6 installed, I don’t think it will install an earlier release of High Sierra for you. The usual one is ⌘-R – this will boot into Recovery and install the latest version of maOS that you had installed on your Mac.

This is a good article to bookmark from Apple – I wasn’t aware that there were different keyboard shortcuts to boot into the macOS Recovery system, and which keyboard shortcut you use will (potentially) give you different versions of macOS installed on your drive.

Reinstall macos sierra