MSI Unify X B550 problems

54thC

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Apr 12, 2022
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hi,guys! when I try to boot(install) Monterey 12.3.1 with OC, it was stuck, I don't know what's wrong, or I should choose Big Sur?

pls help, thx! have a nice day!

My build:
MB:MSI Unify X B550
CPU:5900X
GPU:6900XT
DRAM:G.Skill 4000Mhz 16G*2
OC ver:0.7.9-RELEASE
 

Attachments

  • EFI.rar
    14.6 MB · Views: 1
  • 2deaa4ba3a07877f55a0bb30155b45c.jpg
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Last edited:

Aluveitie

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MSI 500 boards in many cases can't boot Monterey with newer BIOS revisions. With Zen 3 CPU you wouldn't be able to downgrade the BIOS to a working one as they are too old.
If you didn't have macOS already running I'd start with Big Sur, otherwise you might just get blocked by those Monterey issues without any chance to get it to work.
 

54thC

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Apr 12, 2022
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MSI 500 boards in many cases can't boot Monterey with newer BIOS revisions. With Zen 3 CPU you wouldn't be able to downgrade the BIOS to a working one as they are too old.
If you didn't have macOS already running I'd start with Big Sur, otherwise you might just get blocked by those Monterey issues without any chance to get it to work.
I got it , thank you! a few minutes ago, I was tred boot BIg Sur 11.6.5 with same config, I did'nt change anything, but this time looks like have a little progress?
 

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54thC

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Thank you again, here is new situation, it shows ACPI:sleep states S3 S4 S5.... I seach the forum consult same case, I have disabled xhci hand-off in bios. now i am a step further... sutck on PCI configuration begin...
 
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Edhawk

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That may be caused by the SSDT-EC.aml not being set correctly.

So I have swapped the SSDT-EC.aml and SSDT-USBX.aml tables for a single 'Generic' SSDT-EC-USBX.aml table. I have updated the config to reflect this change in the attached EFI folder attached.
 

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  • EFI-v2.zip
    18.6 MB · Views: 8

54thC

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That may be caused by the SSDT-EC.aml not being set correctly.

So I have swapped the SSDT-EC.aml and SSDT-USBX.aml tables for a single 'Generic' SSDT-EC-USBX.aml table. I have updated the config to reflect this change in the attached EFI folder attached.
thx for your help, I tred new EFI version, but still doesn't work.... and some times stuck on ACPI:sleep states S3 S4 S5, some times sutck on PCI configuration begin.... last I tred it sutcks on PCI configuration begino_O
 

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54thC

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Now I Disabled AMDRyzenCPUPowerManagement.kext, stuck at RTC:Olny single RAM bank(128bytes), but many times stuck at PCI configuration begin...I'm still keep searching on Website...
 

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adrianz

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Jul 1, 2022
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@Edhawk, Hi , I have same MSI MEG B550 UNIFY board, and a NvME SSD which has Big Sur 11.6.5 installed (I installed OS on a Intel H270 machine, leave EFI partition blank so I can try different EFI on a flash disk). I'v tried both of EFIs you uploaded, both stuck at like attached picture. Would you please give me some clues? Thank you!​

@54thC , would you please share what you did with those uploaded EFI so that you can install Big Sur successfully? Thank you!

 

Edhawk

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@adrianz which CPU are you using? Is it a 12-core CPU, as that is what the config.plist in EFI v2 is set to patch.

If you have an 8-core or 16-core CPU, then the first three AMD Patches in the Kernel section of the config.plist need to be edited to work with your CPU.

Another issue might arise if you have Enabled Above 4G Decoding in your Bios. If that is the case then you won't need the npci=0x2000 boot argument, which I added to the config.plist.

You will also need to use a different Serial Number, MLB, ROM and SystemUUID, if you are looking to use the EFI v2 attached in post #13.

Otherwise the EFI should be good for a B550 motherboard running macOS Big Sur.
 
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