Hi all As some of you know i am a windows to mac convert, on my PC every now and again I would recover my whole computer back to the factory shipped state to get rid of any clutter on the hard drive etc.... and start a fresh. I don't know how to do this on the Mac. I don't have any disks so I think there must be a recovery partition on the system, i have used the cmd + r on startup and gives me a list of options... what do I select.. and what do I have to do, step by step would be great. Thanks James P.S. I would also like to know exactly how to do this so if and when i come to sell my iMac for an upgraded model i know exactly what i am doing... P.S.S. My iMac came with Lion, and it is a Mid 2011 model.