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chscag

 
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Member Since: Jan 23, 2008
Location: Fort Worth, Texas
Posts: 31,986
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Mac Specs: 21.5" iMac 2.5 GHz i5, iPad 3rd Gen., 3 iPods

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Welcome to the Mac Forums.

As far as repairing the hard drive is concerned, you should be able to do repairs with the original install media which is provided with the machine. Boot from it and run Disk Utility - Verify and Repair.

However, if you have Tech Tools, you can make repairs with it. Which version do you have? Once the bad sectors are repaired, backup the data using Time Machine. (Which you should already have been doing.)
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