Boot from external hd drive

Discussion in 'MacBook Pro' started by heisenberg123, Sep 29, 2015.

  1. heisenberg123 macrumors 603

    heisenberg123

    Joined:
    Oct 31, 2010
    Location:
    Hamilton, Ontario
    #1
    I got a Early 2015 13" rMBP I found my old hard drive from my Early 2011 MBP I was curious how OS X 10.7 would feel on a new MBP but I get a grey screen with an line through a circle

    in system preferences its recognizes it as a startup disc and in disk utility it still says its GUID partition table and the drives shows nothing wrong with it

    any suggestions?
     
  2. jermy4 macrumors demi-god

    Joined:
    Jun 27, 2010
    #2
    I'm pretty sure you can't run any OS X versions older than what your machine shipped with when it was first introduced so you wouldn't be able to use anything older than Yosemite on a 2015 rMBP.
     
  3. heisenberg123 thread starter macrumors 603

    heisenberg123

    Joined:
    Oct 31, 2010
    Location:
    Hamilton, Ontario
    #3
    thanks that does ring a bell now that I read your reply remember reading that in 2011 when I first got a mac
     
  4. jermy4 macrumors demi-god

    Joined:
    Jun 27, 2010
    #4
    They also aren't including support for older versions of Windows via bootcamp on new machine either now. I think the 2015 models can only run Windows 8 or 10, the 7 drivers are missing in action.
     
  5. heisenberg123 thread starter macrumors 603

    heisenberg123

    Joined:
    Oct 31, 2010
    Location:
    Hamilton, Ontario
    #5
    thanks Windows make me ill and will never go back especially Windows 8
     
  6. Fishrrman macrumors G4

    Joined:
    Feb 20, 2009
    #6
    You can't boot a 2015 MBPro using 10.7.
    Won't work.
    That's why you're seeing what you're seeing (the "prohibited" sign), when you try to boot that way.
     
  7. snaky69 macrumors 603

    Joined:
    Mar 14, 2008
    #7
    That is exactly it.

    10.7 just doesn't have the correct drivers to support your hardware. Which makes sense, back when 10.7 was around your hardware was still an electronics engineer's wet dream.
     

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