hi, today my macbook pro refused to boot into OSX, in any possible mode. It does, however, boot into bootcamp or from a friend's installation dvd (since mine is 800km away, in my office together with my Apple Care, since I'm on holidays). I ran the Disk Repaired and it said it cannot repair my disk and I should backup and format. Now my question is: is there an alternative way to fix my disk? can I format without my installation dvd? how can I backup my data if I can only run from dvd? Thank you!