I recently got macOS Monterey running well using OCLP on my Mid-2010 Mac Pro 5,1 on its own drive. I want to be able to easily switch between 3 startup drives to be able to access task-specific setups, each running a different macOS version (Monterey, Mojave, Mountain Lion, respectively—the first via OCLP, the other two natively).
I have an LG ultrawide monitor, running out of a flashed Radeon R9 280x, but when I hold the option key on startup, the Mac bootloader wont appear. I’ve tried plugging it in via HDMI and Mini Display ports, but no dice. When I plugin an old monitor via the Mini Display port, that monitor has no trouble displaying the bootloader (and the OCLP EFI). I’ve tried resetting SMC and NVRAM, but neither made a difference.
Is there something I can do to get the ultrawide monitor to show the bootloader? I feel like there must be something simple I’m missing, but haven’t been able to find any relevant threads with this particular issue. I don’t have room on my desk for both monitors to be plugged in simultaneously (nor do I really want to have them both).
Any help would be appreciated!
[link] [comments]
Post a Comment