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macOS could not be installed on your computer

After it went through 25 minutes downloading, and the bar goes about half way, before I get this message.

macOS could not be installed on your computer


Volume contains macOS or OS X installation Medis

Quit the inhaler to restart your computer and try again.


I have tried 3 times with the same results . What am I doing wrong ?

MacBook Pro

Posted on Mar 16, 2018 7:12 AM

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macOS could not be installed on your computer

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