So I'm wanting to do Iphone development so I need a mac os to code on. I got my brothers old mac from him but there is an issue. He put windows 7 on it because he does all .Net dev. This wouldn't be a problem except instead of using boot camp and having an extra partition, He completely deleted the mac side and it only runs windows. I have a lion dmg burned to a DVD on another mac that I would like to boot from. Windows does still have Boot camp utility on it. How do I completely get rid of windows and just install the mac os x? Can I just wipe windows completely and boot from the cd? Or do I need to mac a partition, install mac, then use boot camp to delete the windows partition? Thank you for the help. I haven't seen any advice on this particular situation.