

So that it can provide native UEFI GOP boot screen for OP to hold option key to boot. In this case, the user can select BootKicker, then the native Apple boot manager will show up, and the user can further select Mojave or even legacy Windows to boot.Ī "more advance but higher risk" solution will be flashing the Mac to have native boot screen support for the non flashed RX580. The newly installed Mojave will still belongs to the same group, and able to boot with the same secure boot settings.Īnother work around is just enable BootKicker in the OC boot picker. In this case, as long as the user don't perform NVRAM reset. The "more work but better result" solution should be re-install Mojave again via the same OCLP boot picker, just cover on top of the existing one should be good enough, no data lost. However, the downside is that the same setting (it's the OC setting, not the OC boot picker) not allow to boot previously installed Mojave. Which has the latest security features enabled.

I believe OCLP use a more "big Sur specific" approach to install Big Sur for cMP. However, the secure boot setting is different. Mojave also belongs to the EFI group, not legacy. Click to expand.I don't think it's the boot picker's problem.
