Hello all, I have a Mac mini 1.66ghz Core Duo, and I today bought a new 250GB HDD to replace the 60GB one inside. I also bought Leopard to install onto it. I have an external 320GB HDD that has about 200GB filled. I have copied the documents/photos etc from my internal drive to my external drive, so everything I want to keep is on the external. Now I want to do two things: 1. Format the new internal HDD so that I can install Leopard 2. Wipe the old internal HDD so that I can re-sell it. Can anyone suggest the best way of doing this?