Hello everyone I recently bought my first Mac, a 15" MacBook Pro ... I have always used PC in the past. Here's a quick description and my question, thanks in advance for any help. Being a power user of PC my typical game plan when purchasing a new PC was to format the hard drive and load the minimum OS & Software that I needed in order to achieve the maximum speed and performance of my new PC. Is this necessary on Mac? Would it give the same effect as on PC?