Hi everyone, This is my first post so please bear with me on this one as I don't understand several things from the clean OS X install guide I've just read. Ok..., I purchased a brand new 2011 MBA, i5 CPU, 4GB RAM, 128 SDD with Lion installed. I want to format the drive and install a clean MAC OS X on the SSD. What do I do? You are mentioning that you need to have a bootable Lion DVD but how do I make one? You are also mentioning to download the .dmg file from the App Store but this is silly because I bought Mac with Lion? Do I have to pay for it once more? What do you mean by MAC OS DVD #1 and #2? So #1 is Leopard and #2 is Lion? Do I need to install Leopard first and then Lion? As I understand Lion fits on a single layer DVD so it should be one DVD, right? Thanks!