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  1. #1
    Trouble with MacBook Pro Disk Utility

    Member Since
    Sep 05, 2011
    Posts
    3
    Angry Trouble with MacBook Pro Disk Utility
    I'm trying to repair my 13" MacBook Pro (2009) HD with DU off Snow Leopard DVD. The first time I did repair it said it was successful, but I still couldn't boot up off the hard drive. I ran repair again and now I keep getting error message: "could not unmount disk". Is there a way I can still try to repair or is reinstalling OS inevitable? I do have backup.

  2. #2
    Trouble with MacBook Pro Disk Utility
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    45,245
    Specs:
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, Yosemite
    It sounds like the hard drive may be damaged or failing. You may be faced with changing it out. Since you can't boot from it and now DU refuses to dismount the drive is a good indication that something is wrong with it. Reinstallation of OS X is probably not going to help.

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