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chscag

 
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Member Since: Jan 23, 2008
Location: Fort Worth, Texas
Posts: 38,879
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Mac Specs: 27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, 3 iPods, OS X Mavericks

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Try this method of repair:

Boot the machine in Single User Mode = Hold down the Command Key and S key as soon as you hear the chime. That will give you a DOS like command line interface.

Now type the following: fsck -y

That will run a verify - repair on the hard drive same as Disk Utility. If you get a response back that the disk was modified, run the same thing again. Keep doing that until you get a response that the MacIntosh HD appears to be OK.
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