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Q: MacBook Pro Erase macintosh hd failed on El captan

I tried to erase macintosh hd, but failed, said unable to eject disk1, does anybody know how to solve this? My system is El Capitan.

MacBook Pro, OS X El Capitan (10.11.6)

Posted on Aug 18, 2016 1:09 PM

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Q: MacBook Pro Erase macintosh hd failed on El captan

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