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mybootmgr

  1. C

    MP 1,1-5,1 Mac Pro with RX580 has no boot screen (black) with OpenCore

    Hey everyone, I’ve got a CMP 5,1 with an RX580 that has no boot screen. I installed Refindplus and Opencore using MyBootMgr which is supposed to give you a boot screen again. I have Mojave and Windows 10 that both run fine but I need to guess how to get into them and it’s a major pain, plus I...