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Need help fixing RTC

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Jan 5, 2019
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Motherboard
ROG Strix H370-i Gaming
CPU
i5-8400
Graphics
RX 580
Mac
  1. iMac
Mobile Phone
  1. Android
  2. iOS
Need some help fixing RTC.
I followed the OC guide here but it looks like I may have random write issues. I split the regions from 00-80 and 80-FF, got a safe mode message on 80-FF but not on 00-80, so the bad region should be within 00-7F. Broke that down further and further until I had it narrowed down to 3F-4C. I split that into two, 3F-46 and 46-4C, but both times it POSTed to safe mode. I backed out to a wider range and randomly decided on 21-67 and again got safe mode. I went all the way back to 00-80....safe mode. Tried 80-FF, safe mode, but 00-FF is good. So it looks like I have regions that are bad randomly??????
Other than the nuisance of booting from BIOS when I reboot (which isn't too often), is there any reason that I shouldn't just get rid of the kext and boot argument? I feel like trying to find the intermittent regions could become a full time job.

OC 0.7.1, Big Sur 11.4
 
hi all,
please help me for below issue:
66122ED9-BF7B-47BA-831F-F9EF215EEA9B.png

HP EliteBook 820 G2

after install Big Sur, choose macOS installer:
538A4215-92DD-49A8-91F4-2594968A7050.png


then stuck at below step:
0A374E04-6A5B-41EC-928B-A9A2BAB6D249.jpeg
 
have you tried to enable DisableRtcChecksum quirk?
 
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