In Disk Utility, click View and Show All Devices. Insert the drive which you want to use, which should be at minimum 16GB and open Disk Utility. This is not strictly necessary but makes sure you don’t run into issues with the USB drive or remains of other experiments on it. Prepare the USB driveīefore we copy files and make our USB drive bootable, let’s start by preparing it first. The first step is to create a bootable USB drive that contains the macOS installer. Step 1) Creating the USB installer for the macOS version of choice If you are creating the USB drive on a different machine then the where you want to do a fresh installation, it’s that second one that matters. You can check on Apple’s website using the following links: So in case you want to use a version on a mac that no longer supports that, you can use this link.įirst, you will need to find out what is the latest supported version of macOS for your mac model. In an earlier post, I covered how to create the same, to install macOS Big Sur, but for unsupported models. The steps that follow will only work for a matching macOS version that is still officially supported on your hardware.
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