hi everyone, I tried to log onto my Mac the other day and it just wouldn't do anything, it just had the little spin thing spinning and spinning and spinning, and then I rebooted it and it just does tha same thing. I have tried safe mode to do the first aid thing, doing the command r s t p or whatever thing where you reset the stuff, and it still does the same. I have a new 2012 MacBook pro running OS X Yosemite seed beta, does anyone have any idea what's wrong? I'm usually really good at fixing these things but I'm stumped, and I don't really want to take it to the Apple store and have them tell me all of my pictures and data are gone 
thanks for any help.
thanks for any help.
