I have a 2010 MBP, with optical drive, running Mavericks. After I login, I get Apple logo and spinning wheel, the just a white or gray screen,it wont boot up. I have tried just about everything and no luck. I have an appointment at Apple Store Sunday morning. Any idea what else I could try? I am thinking my hard drive might be finished. If it is, I would like to get something with more capacity. Would be changing to a SSD be a good way to go? People tell me that I should get rid of the optical drive and put a second drive in there, then I would have to buy an external cd/dvd drive. What would my best options be if I need to get a new hard drive? Thanks for the help. John