Stuck in installation: Gigabyte Z490M/i5-10400 macOS Big Sur

I am trying to install the latest macOS Big Sur on the Gigabyte Z490M (not Gaming X) with Intel Core i5-10400 / Sapphire Radeon R9 270.

I am stuck in the installation process: After switching to graphics mode and displaying the Apple logo, the bar stalls at about 5% and a cursor can be seen in the upper left corner of the screen. However, the boot process continues and after some time the macOS recovery menu is displayed. Only, no USB ports seem to work (mouse and...

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Author: penzelan