HT201314: About OS X Recovery
Learn about About OS X Recovery
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All replies
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Helpful answers
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May 9, 2016 9:14 PM in response to Rihamezby Carolyn Samit,It will erase everything if you choose to reformat (erase) the drive.
Regardless of using OS X Recovery, you should back up all your important data on a timely basis.
You can use the Time Machine app in your Applications folder > Use Time Machine to back up or restore your Mac
That way if you need to reformat the drive at some point, you can restore your photos from a Time Machine backup.