Hello, Can someone please help me with wiping MBPr running latest version of yosemite. I need to wipe it completely, going to return it to best buy today. Waiting for the Macbook Air Retina, After upgrading to MBPr I noticed that I don't need all the ports anymore. I find myself using airplay mirror with apple TV and Airdrop plus iCloud with iPhone an iPad, never have to use USB ports, so I think the new Macbook Air will work perfect. Please let me know how to wipe all my information on this mac....thanks!!