Can't Format External Hard Drive

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Jun 21, 2009
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I have WD HD that I briefly used to back up my Mac. I'm trying to format it again and use it like a regular external HD. However, when I go to the "erase" tab on Disk Utility the options are grayed out.

Help please!
 
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When you backed up do you have files important for the OS to run. If you have your MACOSX disk handy then use that to format from. How are you connecting WD HD to the computer USB or Firewire or Ethernet.
 
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When you backed up do you have files important for the OS to run. If you have your MACOSX disk handy then use that to format from. How are you connecting WD HD to the computer USB or Firewire or Ethernet.

Connected by USB
 

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