How long does it take to upgrade to High Sierra from El Capitan?
Here's How Long the macOS High Sierra Update TakesTaskTimeBackup to Time Machine (Optional)5 minutes to a daymacOS High Sierra Download20 minutes to an 1 hourmacOS High Sierra Installation Time20 to 50 minutesTotal macOS High Sierra Update Time45 minutes to an hour and 50 minutesSubsequently, o...