I am having problems with my MBPS (ML). I have a time machine backup as of yesterday. What is the procedure to reformat and reinstall my my OSX? I mean if I start my MacBook (command R). Will there be an option to reformat and reinstall all my apps using time machine, to what if was before? I downloaded ML from apple store so I do not have a disk for it. If I am missing a step please advise. Thanks.