I just installed macOS Big Sur on my old iMac (late 2009) using EliteMacx86 instruction guide. So far so good but after rebooting I found out that all the PCI interface functions are not working (no ethernet, wifi, audio, etc.). The graphics adapter seems to have minor problems. Using DPCIManager shows that all PCI interface are properly working but not used by macOS. Anyone who can guide me how to solve this?
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