I need to help with and install issue with Ryzen 9 9900x

[Katanoko1221]

Hi everyone!!!
This is my first Ryzentosh build and i've the each problem; When i select "installMacOS" in OC boot menù, the install rest stuck after few second.
I attach EFI, System report and the boot-log containing the error.
I hope there is someone who can fix the efi so I can install macOS!!!

Thanks in advance

Pc configuration:
Cpu: Ryzen 9 9900x
Gpu: Amd Rx6600
Mbo: MSI x870 Gaming Plus
Ram: Crucial 64 Gb
NvMe: (M2) Crucial P3 plus.

 

[Edhawk]

You don't need to open the 'Opencore.efi' file.

You need to add the CPU Kernel Patches to the config.plist, using a Plist Editor such as Corpnewt's ProperTree.

 

[unclesam]

these acpi patches was created from CorpNewt (aka corpghost) on AMD OSX Discord
you have to add in your config.plist in ACPI /Patch section and try again

Hi @fabionsun,

I am reaching out for your expert advice regarding a boot failure following a BIOS update on my AMD Zen 5 system.

Hardware Specs:

• CPU: AMD Ryzen 9 9900X (Zen 5)
• Motherboard: ASUS B850 PLUS WIFI
• GPU: AMD Radeon RX 570
• OS: macOS 15 Sequoia
• Bootloader: OpenCore (Latest)

The Issue: The system worked perfectly on BIOS version 1087 (2025/09/19). However, after updating to version 1402 (2025/11/12), the boot process hangs in verbose mode. I have successfully downgraded back to 1087, where the system remains fully stable.

Troubleshooting Performed:

1. Verified BIOS settings: Above 4G Decoding (Enabled), CSM (Disabled), Secure Boot (Disabled).
2. Confirmed the EFI is fully functional on the previous BIOS version.

Questions:

• Given this is the Zen 5 platform, could the AGESA update in v1402 be breaking the current AMD Kernel Patches?
• Is it more likely due to ACPI/DSDT structure changes in the new BIOS?
• What is the best approach to debug this hang when no clear log is generated? Should I focus on updating specific Zen 5 patches or re-dumping SSDTs?

Any insights or guidance you could provide would be greatly appreciated. Thank you for your time!

Post in thread '[Help] AMD 9900X + B850 - Stuck on Verbose after BIOS Update (v1087 -> v1402)'

Friday at 12:39 PM

The verbose text above shows 2 x ACPI Method errors, for devices (G02F) and (G002). These are probably issues in the DSDT.aml of your updated Bios, which were resolved by a patched DSDT for your older working Bios.

Talk to the person who provided the previous patched DSDT and see if the are willing to provide a fix for the new Bios/DSDT.aml table.

• Edhawk

• 

 

[fabiosun]

@unclesam your previous bios needed of ACPI patches? if so probably they are changed with you bios

You should use a debug version of your bootloader enabling SysReport
Then post DSDT.aml to CorpGhost (aka CorpNewt) on AMD OSX Discord Server

 

[etorix]

Or you can try the patches attached to this post.