unable to enter the system after replacing the motherboard

D

dmls

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AMD OS X Member
Apr 19, 2021
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Ryzen5 5600x
Hello everyone, I have a problem. After replacing MSI A320 with MAXSUN b550m, Big Sur can't boot normally. I have added ACPI according to the 'OpenCORE Install Guide', but it doesn't work

 

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Switching from A320 to a B550 you basically have to redo your entire EFI
 
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ACPI paths are usually different between different models with the same chipset, sometimes even between different BIOS versions. Same for USB ports.
CtlnaAHCIPort.kext and XHCI-unsupported.kext are not needed on B550.
 
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Aluveitie said:
ACPI paths are usually different between different models with the same chipset, sometimes even between different BIOS versions. Same for USB ports.
CtlnaAHCIPort.kext and XHCI-unsupported.kext are not needed on B550.
Click to expand...
"Ctlnaahciport. Kext" and "xhci unsupported. Kext" were added later in the test. He was like this when he didn't join again
 
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Aluveitie said:
ACPI paths are usually different between different models with the same chipset, sometimes even between different BIOS versions. Same for USB ports.
CtlnaAHCIPort.kext and XHCI-unsupported.kext are not needed on B550.
Click to expand...
I downloaded a MSI b550m EFI from GitHub, and the same problem occurred
 
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Then verify your BIOS settings
 
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Aluveitie said:
Then verify your BIOS settings
Click to expand...

BIOS settings is ok
  • CSM: disabled
  • Fast boot: disabled
  • Above 4G decoding: enabled
  • RezisableBAR: disabled
 
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With such an old card better disable Above 4G Decoding and add the npci=0x2000 boot arg
 
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It may not work

 
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dmls said:
Hello everyone, I have a problem. After replacing MSI A320 with MAXSUN b550m, Big Sur can't boot normally. I have added ACPI according to the 'OpenCORE Install Guide', but it doesn't work

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You need to recreate your EFI folder obv... it's a different MB.
 
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Deltwin said:
Try adding in your efi folder: SSDT-AWAC.aml
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Erm…….
Thats not going to work as you can’t use a Intel ssdt for a legacy real time clock fix on a AMD setup.
That’s just a NoNo I’m afraid.
 
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AudioGod said:
Erm…….
Thats not going to work as you can’t use a Intel ssdt for a legacy real time clock fix on a AMD setup.
That’s just a NoNo I’m afraid.
Click to expand...
Erm... I have an amd setup and that aml works perfectly for me..
 
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Deltwin said:
Erm... I have an amd setup and that aml works perfectly for me..
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It’s not doing anything I bet. It’s just sitting in There. Check your io reg and see for yourself.
your using a SSDT that I promise you is doing zero, it’s made for Z390 and Z490 boards. Even the code inside the SSDT points to Intel pathing.
 
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AudioGod said:
It’s not doing anything I bet. It’s just sitting in There. Check your io reg and see for yourself.
your using a SSDT that I promise you is doing zero
Click to expand...
Kkk
 
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