FX-8320 Big Sur

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AMD OS X Member
May 12, 2026
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AMD FX 8320
How can I install macOS Big Sur on my M5A78L M-LX3 FX8320 R7 240 (4GB VRAM) + 4+4GB RAM motherboard? Is there an EFI file for it?
 
Have a look at this thread, it may be what you need.

Edhawk

Thread 'Success - Asus Sabertooth 990FX R2.0 / FX 8350 / Nvidia GTX 690 / OC 0.7.6 - Big Sur 11.6.2 & Monterey 12.1'

I have been playing around with my old AMD FX 8350 system (again) and decided to see if I could get it running macOS Big Sur.

I used OpenCore 0.7.6 and followed the Dortania AMD Bulldozer guide when creating the EFI folder.

I created my macOS Big Sur USB installer using the following CreateInstallMedia Terminal command:
sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled

Installation was slow, with many pauses and some initial Kernel Panics during the various installation stages. However, the end result was Big Sur...
  • Like
 
Edhawk said:
Have a look at this thread, it may be what you need.

Edhawk

Thread 'Success - Asus Sabertooth 990FX R2.0 / FX 8350 / Nvidia GTX 690 / OC 0.7.6 - Big Sur 11.6.2 & Monterey 12.1'

I have been playing around with my old AMD FX 8350 system (again) and decided to see if I could get it running macOS Big Sur.

I used OpenCore 0.7.6 and followed the Dortania AMD Bulldozer guide when creating the EFI folder.

I created my macOS Big Sur USB installer using the following CreateInstallMedia Terminal command:
sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled

Installation was slow, with many pauses and some initial Kernel Panics during the various installation stages. However, the end result was Big Sur...
  • Like
Click to expand...
Hi, I tried this but I get text on a red screen and I can't boot.
 
Look in the Bios and see if you can find an entry named 'CSM' (Compatibility Support) or 'Legacy Boot Support' or 'Legacy Option ROMs/OPROMs'. if any of the three named items are present make sure they are DISABLED.

Also check that 'ProvideCurrentCpuInfo' Quirk in the Kernel section of the config.plist isn't enabled, as it doesn't work for FX CPU's.
 
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