• HighSierraAMD_V3; ASRock 970 Extreme4; USB not working

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#37513 by etnic
Fri Feb 09, 2018 11:10 pm
Hi guys,

I am stuck at this screen:
My USB ports (all of them) stop working every time when i reach that macOS Utilities window.
It doesnt matter if i start it from USB stick or HDD. I have tried some bootflags and USB injection from Clover options, but no success. Switching my mouse & keyboard from USB2 to USB3 also didnt work. Till that moment, everything went well and fast (it takes like 1-2min to get there).
All USB controllers are enabled in BIOS.
My MOBO, patched to version 2.80: https://www.asrock.com/mb/AMD/970%20Extreme4/index.asp
CPU: FX6300 GPU: GTX 650

I have no idea if I need some special kexts. If I do, are there any you can recommend me please? Also some kind of guide how to load them would be great.

Thanks a lot!
Post Merged
small update:

i was able to install Sierra (SierraAMD_V5), USB is working there. system runs fine.
is it possible to move USB kexts from Sierra to HighSierra please?

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