Hello friends, I've been struggling around the installation for days.
I tried all the ways and reviewed all the tours, but I simply stuck it on each and every time.
I made a video to make it clearer to you.
https://youtu.be/Y7AqzOA3uyk
(I thought that Mojave has this problem, but here I have installed High Sierra, and I have the same problem as Mojave)
but here's a brief summary.
When I start installing with the graphics card XFX RX580, it simply will not start. is constantly restarted. Only when I get the graphic card out, everything is ok. I'm proceeding with the installation, and everything is great.
Can you help me? please..