I am running Mac OS Success' href='/2020/12/install-macos-catalina-on-supported-pc.html'>Catalina Success fully and I am going to upgrade it to MacOS Big Sur. I have created a bootable USB and booting from it. On the image I want to install Big Sur on the disk named Mac. I want to clarify whether it will install a clean OS or upgrade my old version. Please help me. My previous post had been removed I don't know why. Thank you
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