I have an early 2011 2.3 GHz MacBookPro i7 that came with Lion. 1. Can I safely reload Leopard and get rid of Lion? If so, must I totally erase the drive? Do I need to boot up from the Leopard disk since it says it won't load when I just put it in and try and install it? 2. If I can't do the above can I partition and load Leopard on a separate partition and still load a Bootcamp partition?