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TERMINAL APP MAC SIERRA MAC OS X
TERMINAL APP MAC SIERRA MAC OS
TERMINAL APP MAC SIERRA INSTALL
TERMINAL APP MAC SIERRA UPDATE
TERMINAL APP MAC SIERRA SOFTWARE

Your drive will be named ‘Untitled’ by default, but you can change this name, if required.

For the ‘Scheme,’ choose ‘GUID Partition Map.’.

TERMINAL APP MAC SIERRA MAC OS

Choose Mac OS Extended (Journaled) as the ‘Format.’.

In Disk Utility’s left-hand menu, select your root drive.

In the Disk Utility menu bar, select ‘View > Show All Devices.’.

Open a new ‘Finder’ window and navigate to ‘Applications > Utilities.’.

Once you have the necessary installer, it’s time to transform your USB drive into a bootable installer:

TERMINAL APP MAC SIERRA INSTALL

In you really want to install Snow Leopard, then your only option is to purchase a boxed version (£19.99), and then use either a CD or DVD drive to install the operating system on your Mac. If you want to revert to Snow Leopard, then frustratingly this version of macOS was never available via the App Store, so it’s impossible for anyone to download this installer from the official Apple App Store. macOS installers aren’t user specific, so if you have a friend, colleague or family member who did download this version of macOS, then they can re-download the necessary installer for you. If you want to install a version of macOS that you never downloaded via the App Store, then your best bet is to enlist the help of another Mac user. Frustratingly, you can’t install this version of macOS simply by double-clicking its installer, which is where our USB drive comes into play! Can’t find the version of macOS that you want? This will download the installer to your Mac’s ‘Applications’ folder.

Find the version of macOS that you want to install, and then click its accompanying ‘Install’ button.

Even though we no longer pay for macOS updates, confusingly they’re still listed under the ‘Purchased’ tab!

TERMINAL APP MAC 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.

TERMINAL APP MAC 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.

TERMINAL APP MAC 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.

If you’re on High Sierra 10.12.4 or later, and you want to revert to the version of macOS that shipped with your Mac, then you’re in luck! This is one of the easiest ways to downgrade your Mac: