Thanks for the suggestion, I tried to use iMac14,2 SMBIOS but failed many times. The installation results in a kernel panic. Since iMac 14,2 came with Nvidia GPU, I guess that may be causing the panic as I am using an AMD GPU.
My OpenCore (0.5.6) Catalina build (10.15.3) is running fine except for occasional freeze & kernel panics (maybe once or twice a day). Mobo is Gigabyte H87M-D3H, CPU is Core i5-4460, HD4600(headless) + RX 560 4GB. My config.plist is attached.
Here is the report when the system freezes.
Use this guide to install High sierra
Note: Updating to High Sierra via App store will not work and you will get this error com.apple.xpc.launchd (com.apple.WindowServer) <Notice>...
I have successfully Installed macOS High Sierra on GA-H87M-D3H with everything working. I will post the instructions when I get time. If anyone has issues regarding this mobo then feel free to ask me. :)
Can you post steps and bios settings of your built as I am stuck at installation of High Sierra.
Stuck at: com.apple.xpc.launchd (com.apple.WindowServer) <Notice>: Service only ran for 0 seconds. Pushing respawn out by 10 seconds
Thanks in advance :)