Sequoia installation troubles on an AMD 9 / RX580

GrisOlle

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AMD OS X Member
Jun 15, 2026
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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





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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.
 
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