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Q: Prohibition sign! Problems reinstalling OS X because of newer version

Prohibition sign is shown on my MacBook Pro 13'' (2012)! Need to reinstall OS X Mountain Lion but it doesn't go, says that the latest installed version is newer. Help! How do I solve this without losing any data? Is there a way to make a back-up now?

MacBook Pro, OS X Mountain Lion (10.8)

Posted on Jan 13, 2016 6:35 AM

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Q: Prohibition sign! Problems reinstalling OS X because of newer version

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