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Gigabyte Z390 M Gaming build with working NVRAM

So @pastrychef any ideas on what would cause it to not boot? I was under the impression that the NVRAM MSR is unlockednon these ASUS boards.

but getting a halt and verbose mode shows this:

978B2C57-4F64-4030-ACD6-3BB4AD25BDA9.jpeg


Video of it



was hoping this would be a straight swap
 
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So @pastrychef any ideas on what would cause it to not boot? I was under the impression that the NVRAM MSR is unlockednon these ASUS boards.

but getting a halt and verbose mode shows this:

View attachment 469147

Video of it



was hoping this would be a straight swap

Try disabling SMCProcessor.kext and SMCSuperIO.kext.
 
It goes to sleep my power supply turns off (Seasonic relay clicks when turning off) the 1 Second later it clicks again and the Mac wakes up ...

Please enter the following in Terminal and post the output:
Code:
log show --style syslog | fgrep "Wake reason"
 
Quick question, apologies if sounds pedantic but trying to understand and learn! I am noticing that the system takes quite a long time to move from the "American Megatrends" screen at POST to the OpenCore boot picker. There was something I changed before I swapped out the old MOBO for an identical new one and it seemed to dramatically reduce the time to reach the boot picker but I don't know what change made the difference. Any ideas on what influences this? MSR is unlocked, BIOS settings as per your recommendations
 
Quick question, apologies if sounds pedantic but trying to understand and learn! I am noticing that the system takes quite a long time to move from the "American Megatrends" screen at POST to the OpenCore boot picker. There was something I changed before I swapped out the old MOBO for an identical new one and it seemed to dramatically reduce the time to reach the boot picker but I don't know what change made the difference. Any ideas on what influences this? MSR is unlocked, BIOS settings as per your recommendations

I don't know what can cause this to slow down or speed up.

If I had to guess, I would say the following can affect the amount of time it takes to get from post screen to boot picker:
  • Amount of RAM installed.
  • Number of drives connected.
  • Selecting UEFI boot only (as opposed to UEFI and Legacy).
  • Correctly setting the drive with your bootloader as the primary boot drive.
 
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Quick question, apologies if sounds pedantic but trying to understand and learn! I am noticing that the system takes quite a long time to move from the "American Megatrends" screen at POST to the open core boot picker. There was something I changed before I swapped out the old MOBO for an identical new one and it seemed to dramatically reduce the time to reach the boot picker but I don't know what change made the difference. Any ideas on what influences this? MSR is unlocked, BIOS settings as per your recommendations

I think you use OpenCore? Me too, is very long time for load list of disk bootable.
Maybe define list in config.plist, it is possible as in clover (disable auto detect) ? @pastrychef
 
I don't know what can cause this to slow down or speed up.

If I had to guess, I would say the following can affect the amount of time it takes to get from post screen to boot picker:
  • Amount of RAM installed.
  • Number of drives connected.
  • Selecting UEFI boot only (as opposed to UEFI and Legacy).
  • Correctly setting the drive with your bootloader as the primary boot drive.
OK, thanks. I have BIOS configured for UEFI booting only, I think, when CSM disabled it removes the options for UEFI/legacy I think? I have the start up disk set in system preferences/startup disk, is that what you mean by "correctly setting the drive" - it's weird, I have been playing with lots of different setups, I had one where it went super quick, just don't know what I did!
 
I think you use OpenCore? Me too, is very long time for load list of disk bootable.
Maybe define list in config.plist, it is possible as in clover (disable auto detect) ? @pastrychef

Yes, it may have something to do with the bootloader auto detecting. It's possible to specifically define bootable drives in OpenCore but, personally, I find it too much of a PITA and I'd have to make changes every time I swap drives around with one of my other computers...
 
OK, thanks. I have BIOS configured for UEFI booting only, I think, when CSM disabled it removes the options for UEFI/legacy I think? I have the start up disk set in system preferences/startup disk, is that what you mean by "correctly setting the drive" - it's weird, I have been playing with lots of different setups, I had one where it went super quick, just don't know what I did!

Yes, disabling CSM should remove Legacy options.
No, I meant setting the boot priority in BIOS.
 
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