I put the leapord install disk into my computer and started installing it. It went fine until it asked me where to install Leapord. With all other installs (applications, games, etc...) my hardrive will show up and that's what I'll click on, but here nothing shows up except my iPod that was plugged in. As a note, it worked on my other computers, but is not working on my G5. What should I do? Heloooo?