boot screen and Mac OS recovery mode?

Discussion in 'Mac Pro' started by rjtiedeman, Nov 10, 2018.

  1. rjtiedeman macrumors 6502

    Joined:
    Nov 29, 2010
    Location:
    Stamford, CT
    #1
    If you install a standard Sapphire RX580 in my cMP 5,1 will it restart in recover mode (Option-Command-R) for running disk warrior or apple system utilities?
     
  2. bookemdano macrumors 65816

    Joined:
    Jul 29, 2011
    #2
    Yes, recovery mode works with any card that has drivers built into macOS, including the RX 580. But the correct key combo to invoke it is Command-R. Command-Option-R is for Internet Recovery which the cMP does not have.
     
  3. crjackson2134 macrumors 601

    crjackson2134

    Joined:
    Mar 6, 2013
    Location:
    Charlotte, NC
    #3
    Command+R works fine. Few seconds of black screen, then as recovery mode loads it's drivers, you will have normal video.

    I THINK Command-Option-R is for internet recovery mode (not sure though). This doesn't work with a cMP. They NEVER had internet recovery option. Command-R works fine however.
     
  4. startergo macrumors 6502a

    startergo

    Joined:
    Sep 20, 2018
    #4
    You can also change the startup drive from within Mojave to the recovery mode with blessing.
     
  5. rjtiedeman thread starter macrumors 6502

    Joined:
    Nov 29, 2010
    Location:
    Stamford, CT
    #5
    thank you all for clearing that up. that makes updating the old GPU to a RX 580 and Mojave more manageable.
     

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4 November 10, 2018