Disk utility not showing volume

I was having boot issues on a mac mini running OS 10.5 so decided to boot off the DVD and run Disk Utility. When Disk Utility came up it listed the hard drive and the DVD drive but it did not list the volume under the hard drive. This means the volume could not be selected thus all the repair/verify buttons are grayed out. Any next steps? Would rather not have to erase the entire drive.
Thanks,
Jim

James,
I don't know for sure but looking into TestDisk may be of help to your situation. http://www.cgsecurity.org/wiki/TestDisk It claims to be able to restore a bad partition table.
I hope that helps

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haha.. ok.. if anyone is gonna be as silly as me, here's what to do.
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http://

Disk utility not showing volume

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