
You should be able to install macOS via the internet, but you may prefer to use the USB drive you prepared with the installer for macOS earlier (which could be faster). The process, again, depends on whether you have an Intel-powered Mac, or one with Apple silicon (an M1, M2 or later).

You now need to reinstall macOS via Recovery.

We run through how to reinstall macOS, separately, but we’ll explain the steps below. The macOS Utilities screen will show a series of options.Įrasing the drive can take a few minutes, but once it’s done head back to the macOS Utilities menu and select Reinstall macOS.Turn it on again while holding the Command and R keys simultaneously until you see the Apple logo or hear a chime.Eventually you will be able to select Options > Continue and this will open up Recovery, as per the image below (please excuse the quality when it’s not possible to screenshot!).Eventually the Apple logo will appear with text below it informing that if you continue holding the power button you will be able to access startup options.

