[Help request] Tahoe install for 9950X - MSI x870 Tomahawk Wifi

vampirevn

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AMD OS X Member
Oct 24, 2025
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Ryzen 9 9950x
Hello gurus,

I'm quite new on AMD OSX (have some Intel build before), I've setup my new Ryzen build for just last few days and able to make Sequoia work with my PC (Disabled onboard Ethernet and Wifi, using PCIe Realtek 8125B NIC instead). The build is not perfect yet, but at least it runs with all basic features, so now I want to start moving to Tahoe to see if it works. I've read some topic in this forum for Tahoe, so created a minimalize EFI and able to run Tahoe installer (I upgrade existing Sequoia install instead of fresh install, it restarted multiple time until "MacOS Installer" become "MacOS" - so I guess the installation finished?).

Now I'm using my previous Sequoia EFI, but it keeps failed to boot to Tahoe (For attached EFI, there is one time it can boot to Apple logo then reboot, then I've tried multiple time, but it always seems failed to boot again)
I've tried several ways but the problem still persists, so please help me to take a look.

Thankyou!
 

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Go back to using the minimal EFI until you reach the Tahoe desktop. The icon name change doesn’t mean the installation is complete.
 
@vampirevn if you need Whatevergreen.kext you should disable it in first steps of thaoe installation and then put it back in latest step
or, if you like use this attached:

this kext is from RojalGraphx of AMD Discor server and help to update Sequoia or lower to any version of Tahoe
Obviously with proper AMD Kernel Patches for sequoia and all the limitations Tahoe has in this release for hackintosh

EDIT
Also USB kext (for USB mapping i mean) have to be updated to work with Tahoe
 

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Thanks @Edhawk and @fabiosun
I actually tried "Minimal EFI" and install Tahoe again and now it working.
Currently I can still boot to Tahoe without Whatevergreen (Everything seems working fine for now) but I will try your version later to see if having any improvement - But not sure how I can check GPU performance here for verify)

Current problems that I'm trying to resolve:
1. Map USB again, currently using XhciPortLimit. One strange thing that I have SoundBlasterX G6 DAC - which currently working fine (But it was having stuttering issue when using my old USBToolBox map on Sequoia, will try to map again to see if the problem resolve)
2. Audio not working, my mobo having USB Audio - which working fine in Sequoia but not sure why not working on Tahoe. Tried AppleALCU kext but not working, will try will VoodooHDA to see if it help
3. Verify PowerManagement and Sleep work. Also check for CPU Fan - which currently not detected (While CPU temp is detected by AMD Power Gadget and SMC plugins)
4. Try to upgrade LucyRTL8125Ethernet to v1.2.2, currently I have to use v1.1.0 to able to boot (Maybe related to AppleVTD - which I don't have much experience yet)
5. Currently I can only enable one MMIOWhitelist - required for boot - while there are 4 left not enabled, because kernel will panic if I enable them. Will try to enable them again to try to whitelist as much as possible.

P/S: One more small question about the SSDT, currently I'm using SSDTTime aml and patches, while in AMD Vanila and Dortania guide suggest SSDT-CPUR.aml and SSDT-EC-USBX-DESKTOP.aml (Which I think SSDTTime already have USBX patch). Should I also enable SSDT-CPUR?

After that hopefully I can create a repo to share configuration for other that having same build.

Attached current bootable EFI if anyone interesting in.
 

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Last edited:
currently I can still boot to Tahoe without Whatevergreen (Everything seems working fine for now) but I will try your version later to see if having any improvement - But not sure how I can check GPU performance here for verify)
If you do no need do not use also the one i have attached :)

1. Map USB again, currently using XhciPortLimit. One strange thing that I have SoundBlasterX G6 DAC - which currently working fine (But it was having stuttering issue when using my old USBToolBox map on Sequoia, will try to map again to see if the problem resolve)
2. Audio not working, my mobo having USB Audio - which working fine in Sequoia but not sure why not working on Tahoe. Tried AppleALCU kext but not working, will try will VoodooHDA to see if it help
both these two are related
XhciPortLimit doesnt work well in tahoe
internal motherboard audio (if it is an USB audio ) doesnot work because you have to map USB ports well for tahoe
 
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ops your post is disappeared :P
 
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