<< Solved >> BIOS warning after reboots

[albarreto]

Hi folks,

My setup:
- Asus Prime Z490M-Plus
- i5 10400
- NVME WD_BLACK 250GB SN770 (MacOS)
- SSD M.2 256gb (Windows 11)
- Catalina (iMac20,1)
- OC 0.7

The system works fine. But all time that I reboot I receive a warning screen 'System has posted in safe mode bla bla bla. Press F1 for setup'. Se I reboot again in this screen, OC options shows again.

Note: Windows reboot works fine

Any idea? TIA

 

[jaymonkey]

@albarreto,

That error is usually caused by AppleRTC writing to certain areas of the motherboards RTC memory.
This is quite common and is addressed in the official/dortania OC guide :-

Fixing RTC write issues | OpenCore Post-Install

Cheers
Jay

 

[albarreto]

Thank you very much!
To change DisableRtcChecksum to "true" WORKED for me!!!
The only little issue is that windows time remains wrong. I forced time update and it's adjusted.