Hi,
I'm trying to install Big Sur (11.6.8), and getting desperate about making it work...
I followed this guide:
https://www.tonymacx86.com/threads/msi-pro-z690-a-ddr4-i7-12700k-amd-rx-580.319149/
I'm stuck during the USB installer on with error "lowest level disk is not mounted" and...
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