Mac Pro 5,1 GPU Boot Screen Question

Discussion in 'Mac Pro' started by judino28, Mar 20, 2019.

  1. judino28 macrumors member

    Joined:
    Jul 29, 2008
    #1
    I've read through many threads over the years, but don't think I've ever encountered a straight answer to this, or if it was there, I totally missed it.

    Let's say I upgraded to the Apple recommended Sapphire Radeon RX 580 Pulse. I know I would lose the bootscreen that I currently have with my flashed 7950.

    However, would the different startup options still exist if I booted with the option key, even though they are not displayed? Could I blindly choose to boot into Windows 10 or my recovery partition, by using the arrow keys and return to select my preferred startup disk? Or is is that, without a supported bootscreen GPU, those options simply don't exist at all and cannot be chosen blindly?

    If I know the necessary keystrokes, it seems that living without a bootscreen wouldn't be that much of an inconvenience except for perhaps the times I would misjudge and boot into the wrong place.
     
  2. crjackson2134 macrumors 601

    crjackson2134

    Joined:
    Mar 6, 2013
    Location:
    Charlotte, NC
    #2
    The option key start won't exist. However, CMD-R will give you your recovery partition, and you can select your windows disk by using the Startup Disk Applet in settings provided it's not an EFI install. El Capitan & Mavericks won't work with the RX580 as they have no built-in driver support for that GPU. You will need High Sierra or Mojave, and you need to leave the older macOS's behind.

    I think Sierra MIGHT have drivers for the RX580 but I'm not sure on that one, so I didn't recommend it. Someone else will jump in and clear that up.
     
  3. Mac Hammer Fan macrumors 6502a

    Mac Hammer Fan

    Joined:
    Jul 13, 2004
    Location:
    Belgium
    #4
    I can live without a bootscreen. I use a GTX 980 without problems in HS and I have ordered the Pulse Sapphire RX 580 for my second Mac Pro 5,1.
     

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3 March 20, 2019