Hi, I have a working Mojave installation on my MP 5,1, but I want to create a fusion drive and reinstall the OS from scratch. Is this possible with an RX560 installed (no boot screen)? I'm guessing I use the createinstallmedia tool to create a USB installer. Do I then select it as the startup disk from the Startup Disk system preference? Once in the installer, can I get to a terminal to create the fusion drive? Or is there no video at that point? Thanks!