Upgrade my OSX
How do I upgrade my OS X 10.9.5 to OS X 10.15 or later?
How do I upgrade my OS X 10.9.5 to OS X 10.15 or later?
Back up your data, check your applications for compatibility, and if your Mac is a 2012 or newer model(2013 for desktop Mac Pros), download Catalina or Big Sur. If not, you can't.
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Upgrade my OSX