HT205360: About the OS X El Capitan v10.11.1 Update
Learn about About the OS X El Capitan v10.11.1 Update
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Helpful answers
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Jun 3, 2016 10:29 AM in response to jfubar13by leroydouglas,Force a shut down by holding the power button for an extended amount.
Restart as normal
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Jun 3, 2016 10:53 AM in response to leroydouglasby jfubar13,When I do that the apple and the bar comes up. After a few seconds it goes back to the white screen.
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Jun 3, 2016 11:00 AM in response to jfubar13by leroydouglas,Boot into Recovery mode holding the command R key (or if necessary Internet Recovery, the option command R keys.
OS X: About OS X Recovery - Apple Support
From the Utilities drop-down menu >Disk utility> Run the First Aid on your Macintosh HD
You can reinstall the OSX from here as well.
All good to have an up to date backup plan in place.
—If you use the Recovery System stored on your startup drive to reinstall OS X, it installs the most recent version of OS X previously installed on this computer.
—If you use Internet Recovery to reinstall OS X, it installs the version of OS X that originally came with your computer. After installation is finished, use the Mac App Store to install related updates or later versions of OS X that you have previously purchased.