My cMP(5.1)'s startup behavior has gone haywire. I need help. I'm still on macOS 12.2.1.
I replaced it with OCLP 0.4.3 and my Mac boot time is ridiculously long. No startup failures.
I changed my video card from RX580 to GTX680 (Mac ROM) and checked the boot status. Then the progress status had changed. Previously, the startup was initiated with a white apple symbol screen on a black background. It now displays the startup disk selection screen (second level) first. At the bottom are reboot and shutdown icons and a number beginning with REL. Even USB mouse and keyboards do not respond at this time. I wait here for 30 to 40 seconds and the Mac starts up.
I downgraded to OCLP 0.4.2 because I felt very uncomfortable. And I tried booting with bare OpenCore(0.7.7 or 0.7.9) and config.plist without OCLP. At this time I'm using the reset button on the logic board to clear the PRAM as the USB mouse and keyboard are unresponsive. I will not be able to boot normally once I do this clearing. I boot the Mac while holding down the option key to bring up the boot screen. Then I select EFI Boot, which changes the boot disk icon to the black background color as shown above. The mouse and keyboard are responsive the first time, but once I enter EFI Boot they become unresponsive. Then the Mac starts booting.
And here's the weird thing. I went back to an RX580 video card. Then it changed so that the "boot disk icon" always appears at startup (I can't control anything) and the Mac starts up. Of course, before, this startup disk icon was not displayed.
*I have found that hitting the enter key repeatedly right after pressing the power button speeds up the startup slightly.
How can I go back to the way things used to be?