![]() ![]() ![]() I couldn't update choosing this option, I was stuck on the "try again screen". I tried to install my new macOS Big Sur but I faced this same message "A software update is required to use this startup disk". Key so I could see my bootable USB in there. I also partitioned my HD to install the other MacOS version of the mac but this is not relevant.Īfter creating this booable USB, I restarted my PC and held the I wanted to have 2 different MacOS versions on my computer, so I created a Bootable USB with BigSur Installer (did all of this on my Catalina OS). Doing this when the "it is necessary to make an update" screen appears and the computer will download the updates, make the update, automatically reboot, and you will be able to proceed with the installation without any problems. , connect a wifi network by searching for yours on the dropdown list). ![]() TLDR On the "Startup Disk Selection Screen", that appears after holding ![]()
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