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Will my data on the Macbook Pro be destroyed if I upgrade to macOS Sierra from OS X El Capitan?
asked Oct 26, 2016 at 8:00
It will most likely all be there. It will only update the operating system and leave your data untouched.
It is still a good idea to make a backup in case something goes wrong.
answered Oct 26, 2016 at 8:06
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