I have installed OCLP on many Mac computers but this particular one is driving me crazy. iMac 27 5K 2014. The option button looks like disabled in the nvram and i cannot find a way to enable it again even by resetting the nvram ( which i need to do by using terminal command “sudo nvram -c” ). I even went through removing the coin battery from the motherboard for 30 minutes. I know that you can enable the option in nvram to always show the boot picker but then you always have to select the appropriate boot option. Anyone has a solution ???
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