So as they said in Aliens, “Nuke the site from orbit. ![]() I needed this recently on my Mac because I had to downgrade from the beta of Big Sur and there’s no way to install Catalina directly from within Big Sur. ![]() This is a pre-boot environment that includes a few key utilities and the installer for the current shipping version of macOS. Once it connects, you’ll see it download a huge file, which is the recovery image.WiFi is the easiest way to go, so pick your SSID from the list and enter the password. It’s going to ask you for access to a network.Shut the Mac down and then hold down Cmd-Opt-R until you see first the Apple boot logo and then the spinning globe-actually, a circle behind which a flat bitmap of the Mercator projection scrolls on repeat, but we don’t need this to look pretty, we just need it to work.
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