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Is there a way to disable a laptop's (MBP) built-in screen when using an external screen without closing the lid? I would like to keep using the trackpad due to accessibility reasons.

Alternatively is there a way to make the external screen the default one and prevent windows and other things from popping up on the laptop screen? if yes, then I could simply ignore the built-in screen without disabling it.

marked as duplicate by Monomeeth Aug 14 '18 at 9:56

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