I bought a couple of used powerbooks one for home and one for my office. The office machine is a 15 in 1.67 ghz 512 ram model with a 80gb HD. It came with a fresh install of leopard but Im thinking it must have been done wrongly because it is showing a full startup disk message and zero kb available. It is running but very crippled. I tried to reinstall leopard but it wont seem to let me, "cant use leopard disc as startup". Is there a way to erase the hd so I can reinstall? I went to disk utility and it verified OK. Any direction would be great thx