How to get Ventura, Monterey, Big Sur or older installer The Mac App Store is probably the easier option, but there can still be difficulties depending on which version of macOS your machine is running, and if you were hoping to grab older installation files that can be tricky – we have another article discussing how to get older versions of macOS.

The installation filesĭepending on which version of macOS you are running, and the version you want to to install, you will either be able to get the installation files from Software Update in System Preferences, the Mac App Store, or you will have to obtain them from elsewhere. Note: If you have data on the drive that you plan to use you will need to transfer it to another drive, or get a new drive, as it will be completely formatted and erased. Read our round-up of the best SSD drives for Mac where we recommend the LaCie Portable SSD, but you could use any cheap USB thumb drive. If you have an M1 Mac you might actually be better off with a Thunderbolt drive because there have been some issues with using USB drives with the M1 Mac. You’ll also benefit from USB 3, or USB Type C – this may be your only choice if you have a newer Mac (otherwise you will need an adapter).

We recommend a Flash memory stick, rather than a standard hard drive, as it will be quicker.

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