Help with Ryzen 7900x and Rx 580 please

S

SRinzin

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AMD OS X Member
May 13, 2025
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CPU:
7900x
I am noob here and have been struggling to start the Ryzentosh. Can someone please point me in the right direction? I have attached the config.plist and error log.
Cheers
 

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Your RX 7600 XT is not compatible with macOS.

The integrated GPU in the R9 7900X CPU is also incompatible with macOS.

So you are wasting your time trying to get your system working with any version of macOS. Unless you can swap the RX 7600 XT for a compatible RX 5000 or RX6000 series AMD GPU.
 
Hi Ed,
thanks for the answer. I have replaced the 7600 xt with my old RX 580. Still unable to boot. I will attach my EFI if you could help please?
 

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I will have a look at the EFI folder when I am next at my desk, later today.
 
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@SRinzin
you have to read how to build a proper config.plist
you miss ACPI ssdt
Booter quirks
MMIO Whitelist (or quirk combination)
Also your ethenet could not work (if it is the newest realtek)
 
fabiosun said:
@SRinzin
you have to read how to build a proper config.plist
you miss ACPI ssdt
Booter quirks
MMIO Whitelist (or quirk combination)
Also your ethenet could not work (if it is the newest realtek)
Click to expand...
Hi Fabiosun,
I am not very good at coding I suppose. I have basic computer skills and I tried my best to follow the open core instructions. I couldn’t make it work, hence here I am asking for help. Maybe you could point me in the right direction please?
 
try to read a bit from here:
F

Post in thread 'I need to help with and install issue with Ryzen 9 9900x'

Katanoko1221 said:
Maybe caused to an errate setting on a "config.plist"
Click to expand...
I do not think
Try to delete -v option (to see apple logo during boot part and no verbose output)
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find the latest working EFi for MSI user and try to understand seeing inside it
in short:
AM5 platform need some additional patches (for ACPI, MMIO whitelist, SSDT)
you should find proper MMIO for your MSI with opencore debug and the target set to 67
You should use also SSDTtime ffrom @CorpNewt githb to create proper ssdt for you (For CPU, and USB)

How did you have build OSX installer?
Is it a full installer or a recovery installer?
The second option could not work for you if your motherboard has a realtek 2.5 board but maybe the one in B650 is still supported
Find also a guide how to build a proper debug log, because only you can do this step (post then a debug log and SysReport)
 
I looked around like you said and got an EFI from a MSI motherboard. I managed to boot to installation but cant progress with "pkdownloaderror error 2".
I have attached the updated EFI file. And I can confirm that my ethernet works in recovery menu. Please help.
 

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SRinzin said:
I looked around like you said and got an EFI from a MSI motherboard. I managed to boot to installation but cant progress with "pkdownloaderror error 2".
I have attached the updated EFI file. And I can confirm that my ethernet works in recovery menu. Please help.
Click to expand...
you can try this config
your <EFI had many errors (it is done for a gigbyte board) , it uses a bootarg for intel ethernet you doesnt have and also MMIO are for other boards
Main error is you do not use in it a Casey patches so your ethernet isnt seen (probably) from OSX
If you want try you can use this config with it
i corrected errors above and disabled mmio for now
If you try clean Nvram on boot menu and then try to see if ethernet works
 

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i disabled also an intell SSDT, if you downloaded before my config , download it again
 
Hi Fabiosun,
i have tried your config and I get to installation but it doesn’t complete or crashes and restarts. I am currently trying to install on an SSD. Do I have to install it on a NVMe? Your help is much appreciated.
 
No you don’t have to install macOS on an NVME drive, an SSD will be fine.
 
@SRinzin a picture or a video of this crashes could help to understand.
I would create an opencore debug EFI with minimal kexts and SSDT created with SSDTTime and disable Visual amd kernel patches (2 patches in you config.plist kernel section)
A better description of crashes messages could help (bad USB Mapping? not compatible disk? recovery download option works? and so on
 
I spent last two nights rebuilding everything. I used opencore debug EFI and created SSDT with SSDTTime as per the Dortana guide. I couldnt understand how to disable the visual and kernal patches. I mapped USB, used minimal kexts. Please find the EFI attached below, I have edited the config.plist given by you. I have also added the opencore log. I am getting a stop sign and cant progress further.
 

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How many drives are attached to your system?
When troubleshooting macOS it is always best to only have the macOS drive attached, as it lessens the chance of one of the other drives causing issues.
I would recommend you uninstall all the other drives attached to your system, temporarily until you have finished the macOS installation.

Regarding your EFI folder contents, I would comment as follows:
  1. You don't need the SSDT-PMC.aml table in your setup, this is a specific SSDT for Intel 300 series motherboards. It shouldn't be used with an AMD system.
  2. Your AMD motherboard probably doesn't require the SSDT-USB-Reset.aml table. This SSDT is usually required by Intel 400 series motherboards where the manufacturer has broken the ACPI Spec.
  3. Using BlueToolFixup.kext on its own is unusual to say the least.
    1. If you have a non-native Apple/Broadcom Bluetooth device then you would need two other kexts to have the Bluetooth work.
      1. BrcmFirmwareData.kext
      2. BrcmPatchRAM3.kext
    2. If you have an Intel Bluetooth device, you would need to add two different kexts to your setup for the BT to work.
      1. IntelBluetoothFirmware.kext
      2. IntelBTPatcher.kext
  4. Within your UTBMap.kext:
    1. The XH00 controller is looking to activate 17 x USB ports.
      1. This isn't possible. You need to reduce the number to 15 x ports.
      2. You have too many ports set as Internal (255), a few of them are USB3 ports (SS03 & SS05).
      3. So it is obvious these are set with the wrong connector type.
    2. The XHC2 controller is only activating 1 x USB2 port, this is unlikely to be correct.
  5. Config.plist contents:
    1. You have the first 3 x MmioWhitelist entries set to true/enabled, this is again unusual as the normal setup only has 1 x entry enabled.
    2. Your kexts are out of date, some by a long way.
      1. You need to update your Lilu, VirtualSMC, WhateverGreen, AppleALC, NVMeFix, BlueToolFixup and RestrictEvents kext.
    3. If you aren't using the blackosx\BsxM1 OC bootloader theme, you don't need to mention it in the config.
    4. Mics > Security > SecureBootModel should be set as Disabled, not as Default.
    5. SIP should be partially disabled, i.e set to <03080000> not <00000000>.
Have a look at making the changes above and see how the revised EFI works.
 
Yay! I got it working. I did all the changes you asked and managed to install Ventura. I tried Sequoia and Sonama but can't load into the installer. I am trying to fix bluetooh and audio. Just realised the Mediakit Wifi card 6E is not compatible but my ethernet is working fine. I will work on it further and when I have it mostly working, I will post on success section so it may help others with similar setups to mine. Your and Fabiosun's help was much needed and appreciated. I'm so happy and excited right now.
 
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