I have an iMac 21,5 from 2010, i3 and Quadro K2100m and got a problem on macOS, any, from 11 to 15 that it just refuses to boot (yes, I have tried installing all of those versions, same issue persists); I currently have two OSs installed, High Sierra and Sequoia, I'm on latest OCLP release. When I boot from HS it works normally, reboots normally, etc etc However when I boot from Sequoia, after I reboot or turn the mac off and on again it doesn't do anything, just does the chime and nothing else, the fans start spinning at maximum speed and the keyboard doesn't work. The only way I can get it to work is by turning it off and on again a dozen of times while trying to reset the NVRAM. It doesn't work immediately, usually after a couple of restarts it actually resets it. Don't know how to fix this. Reinstalled opencore, updated to last version, changed some settings, nothing works, and not just on Sequoia but any macOS starting from Big Sur.
The most stable macOS so far is Big Sur, all the others are just slow and terrible acceleration…
Sometimes OpenCore can’t even boot, don’t know why.->
The most stable macOS so far is Big Sur, all the others are just slow and terrible acceleration…
Sometimes OpenCore can’t even boot, don’t know why.->
