cant boot Osx after installing windows

Discussion in 'Windows, Linux & Others on the Mac' started by K416ix, Apr 14, 2015.

  1. K416ix macrumors newbie

    Joined:
    Apr 13, 2015
    #1
    I have a 2011-2012 macbook pro 15. yesterday I installed windows 7 using bootcamp and installed all drivers. everything seemed fine and I even switched to OS X Yosemite once and went back to windows again. and then I tried to restart and boot back to OS X and it did not let me. so basically once I restart, I hold the option key and when I do that nothing happends. all I see is a black screen. it does not show me the booting options. If I restart the computer and touch nothing windows automatically boots up. so windows is fine. so what I tried to do is go into bootcamps control panel and change the start up boot to OS X and restarted thought this might automatically boot osx but it didnt. so macbook got restarted and it stayed on black screen. option key still doesnt work. I also tried the command + R and i get the utility screen but I still cant boot OsX eventhough i can load windows again from start up on my utility screen. so I dont know if i need to re install OSx, or if its the drivers or a hardware issue or what. please help me out, I need my OS X and files that i have on it
     
  2. yjchua95 macrumors 604

    Joined:
    Apr 23, 2011
    Location:
    GVA, KUL, MEL (current), ZQN
    #2
    Did the OS X side somehow got erased, even if you did manage to boot back into it once?

    Note: Recovery can work even without an OS X partition present (or even with an unformatted internal drive).
     
  3. maflynn Moderator

    maflynn

    Staff Member

    Joined:
    May 3, 2009
    Location:
    Boston
    #3
    I'd boot into the recovery partition and see what the Disk Utility has to say about the partitions on your drive.
     

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