Hello. My MacBook Pro won't fully boot up, it hangs on the chime screen. You'll note from my attached pic that a repair didn't work and it recommends that I format and start over - sounds daunting,is it??? My other concerns are this: 1) I've brought the machine on holiday with me, can I do it away from home? 2) When i upgraded OS X it was done over the cloud, I never got an install disc so, can I reboot up to latest OS again while aboard on holiday?? Sorry about trivial basic questions but hey ho, I not tech savvy.... Thanks for any advice I might receive.