I have a 46" LCD TV hooked to a Mini and I would like to know if anyone knows how to reduce the screen size to mimic a 21" TV. In other words, have black space around a 21" display.
Click on the apple on your top left of the screen under hardware go to Display then you will see resolution Click scaled and find your screen resolution >>
Apple Icon >
Ssystem Prefeneces >
Hope this helped
Forgot to Add maybe use 'Under Scan'
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