Sequoia installation troubles on an AMD 9 / RX580

GrisOlle

New member
AMD OS X Member
Jun 15, 2026
3
0
1
CPU:
AMD 7900X
Greetings!
Running into some problems installing Sequoia 15.7.7. on the following system

Motherboard: MSI Pro B650-a WiFi,
CPU: AMD Ryzen 9 - 7900X,
GFX1: //Temporarily Disconnected// GeForce rtx 5060ti 16gbvram (epci1 - Windows/Linux),
GFX2: Radeon Rx 580 series 8gbvram (epci2 - hackintosh),
RAM: 32Gb DDR5
PS: Corsair rm850e
SSD1: //Temporarily Disconnected// Lexar Area pro 1Tb (m2.1 - windows)
SSD2: //Temporarily Disconnected// Fangxian 256gb (m2.2 - Linux)
SSD3: Lite-on LGT128 m6g (m2.3 - hackintosh hopefully)

Currently I only have the Radeon and the SSD in m2.3 connected for the purpouse of installation. Monitor is connected via displayport on the Radeon RX580.
I´ve created the USB using OpenCore Legacy patcher 2.4.1 (I have very slow internet connection atm so I need to download the image offsite and copy)
Below is the config file I´ve taken from the post kindly suggested by @Edhawk and edited with information that i could find regarding this setup
I´ve tried to clean up the kext to get it to install however it freezes up on me and I can´t undertand where the error is.

I have some doubts, is it correct that the UTBMap.kext has a maximum of 16 ports (I´ve disabled 3 as it discovered 17)?

is this correct:
Code:
-v keepsyms=1 debug=0x100 agdpmod=pikera npci=0x3000





Screen Shot 2026-06-16 at 23.41.44.pngScreen Shot 2026-06-16 at 23.42.07.png

Screen Shot 2026-06-16 at 23.42.21.png
 

Attachments

Last edited:
This is where the installation stops

83320.jpg
 
GFX1: //Temporarily Disconnected// GeForce rtx 5060ti 16gbvram (epci1 - Windows/Linux),
GFX2: Radeon Rx 580 series 8gbvram (epci2 - hackintosh),
Having the RX580 hanging from the chipset rather than the CPU is not optimal. I'm afraid that a dual or triple boot with alternative GPUs will be difficult, unless you can find a motherboard with a pair of x8/x8 bifurcated PCIe slots from the CPU.

I know none of your SSDs, and have no idea whether any is suitable for macOS, which is picky.
I have some doubts, is it correct that the UTBMap.kext has a maximum of 16 ports (I´ve disabled 3 as it discovered 17)?
No. The limit is 15, but it applies per controller; as AMD systems have multiple USB controllers you may well have more than 15 ports in total.
How have you done USB mapping? In doubt, use a USB 2.0 port and/or device.
-v keepsyms=1 debug=0x100 agdpmod=pikera npci=0x3000
agdpmod=pikera is for Navi cards (RX 5000, 6000), your RX580 does not need it.
npcie=0x3000 maybe, but why?

No SSDT-CPUR, or equivalent (PLUG-ALT)? That's not going to work.
 
AMD systems need to enable ‘Above 4G Decoding’ bios option or add the ‘npci=0x3000’ boot argument, if the bios option can’t be found.

Never both at the same time.
 
The proposed Lite-on SSD is a SATA/AHCI drive not NVME, so it may be OK as the macOS drive.

The Fangxian NVME drive is fine as a secondary drive, I.e. containing a different OS, not as a macOS drive. I know this from experience using a similar drive in a dual boot Dell system.

I’ve never used a Lexar Ares Pro PCIe 5.0 drive, but doubt it would play well with macOS. It may be OK as the Windows drive but only time will tell when it is reconnected and the OP tries to triple boot their system.
 
  AdBlock Detected
Sure, ad-blocking software does a great job at blocking ads, but it also blocks some useful and important features of our website. For the best possible site experience please take a moment to disable your AdBlocker.