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Question: Reinstalling OSX

I want to reinstall High Sierra on a MacBook Air and I'm confused whether just reinstalling is enough, or if I should erase the entire disc.


If I press command + r during boot and select disc utility, should I then choose Macintosh HD, or would that prevent me from reinstalling High Sierra afterwards?

MacBook Air, iOS 10.3.3

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Yes.

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Mar 11, 2018 8:24 AM in response to emildandersen In response to emildandersen

Command-R will reinstall your present OS "in place". It shouldn't affect your own data or applications. If you choose to erase your Mac OS volume (the lower indented icon) it will not preserve your data.

Shift-Command-Option-R will reinstall the original OS that shipped with your Mac.

Mar 11, 2018 8:24 AM

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Question: Reinstalling OSX