I have a hard drive with a corrupt partition table. I tried to fix it with fdisk and DiskDruid, but there is still a problem. Everytime the kernel checks the partitions, it reads 16 partitions. Fdisk and DiskDruid only shows the new one I created. I have no data on the drive yet so I don't have to be careful. I just want to know how do I get a fresh start on my partition table. Can I use dd and just write all 0's? And what command would I need to do that?

Just in case anyone asks why the drive got corrupt in the first place -- it's not a bad drive, I had a bad stick of RAM which I have since removed from the system. The rest of it is running great, but I need to get this drive cleared up to get my file server back up and running.

This will wipe the MBR and partition table. Just make sure you run this on the right drive.
dd if=/dev/zero of=/dev/hda bs=512 count=1