You can run 2x versions of OSX, either as a dual boot, or window in window (or what ever it's called) no windows required.
But, it only worked twice for me with Mojave and Catalina as dual boot. And this is also to run legacy software.
Again, I'm not really sure I follow! Thanks for all the help though - it is really useful to bounce this off people who know what they're talking about!
Whats Window in Window?
@Scrabble started
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You can run 2x versions of OSX, either as a dual boot, or window in window (or what ever it's called) no windows required.
But, it only worked twice for me with Mojave and Catalina as dual boot. And this is also to run legacy software.