Hi, I've been having a problem and have no idea how to fix it. I've been running macOS 10.14.1 for a while now with no problems but I just bought a 5700XT GPU which isn't supported until 10.15.1 so I have to upgrade. I followed the setup guide here and got everything working including the GPU. However, I can only boot from USB. When I choose to boot Catalina from my hard drive, it says:
AMF: Only 168/256 slide values are usable
Valid Slides: 88-255
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The thing that's confusing me the most is that it says the same thing when I boot from USB but it still continues to boot successfully, but when booting from HDD, it hangs here and won't go any further.
I've tried searching for days now and all I can see is people saying it's a memory error and to try the OsxAptioFixDrv.efi instead. I've tried all versions of this driver and they show something different but the system still won't boot. I've been unable to try installing with OpenCore because I don't understand how to but from what I can tell, it can and should work with Clover.