1/3/2024 0 Comments Macos big sur downgrade![]() ![]() Warning : This process will completely erase your Mac’s startup drive, destroying all of its content.Įarly versions of the Mac OS did not make use of a read-only system volume and a read-write data volume. Let’s start this section with an important notice: Once you have the bootable installer and a current backup, you’re ready to start the downgrade process. ![]() How to Make a macOS Sierra USB Install Drive.Create a Bootable macOS High Sierra Install Drive. ![]()
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