I'd like to start from scratch and do a complete rebuild complete with 2 100GB drives and a lot of audiobooks. I've followed Rob's instructions and they seem to work fine but one of the drives had music on it in the past. It seems to be causing me some issues. Can't get emplode to sync with no music on there and so forth. Basically, I'd like to write zeros to the whole drive and not just on the partition table. What is the command for doing that?

Is it: dd if=/dev/zero of=/dev/hda

Thanks!