Hardy can't find drivers for hard disk drive on a Dell Optiplex 780

[garg]

I set up a PXE boot net install environment for Hardy Heron but it does not find the hard disk drive. It asks me to select a hard disk driver from a list but none of the options work. The drive is a Seagate barracuda 7200.12.

I tried to set up a PXE boot netinstall environment for Lucid and that works perfectly.

Does any one know a fix for this issue? Where can I get the hard disk drivers for hardy?

Thanks