SOLVED! First Boot with Unibeast USB Hangs

This is my first attempt to install Catalina on a new build. The initial boot required to format the target drive (1TB SSD) seemed to go smoothly until near the end where it hangs completely. I've given it 7+ hours (overnight) to complete and launch the installer but without success. Here is the basic configuration:

MB: Gigabyte B365M DS3H
CPU: Intel Core i7-9700K
SSD: Adata XPG Sx8200 Pro

I also bought a PowerColor RX-570 graphic card, but it would not power up. I've RMA'ed the card to...

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