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AMD Radeon RX 580 Updated, preparing for BigSur - Opencore update.

Joined
Nov 26, 2015
Messages
14
Motherboard
Gigabyte Z97X-UD5H-BK
CPU
i7-4790K
Graphics
RX 580
Mac
  1. iMac
It's been a long time since I immersed myself in this world. I needed to upgrade from high sierra, but then pandemic times came, there was no GPU available and I had to stick to the issues with the old software, but NOW, finally! I already changed my GPU to a Radeon RX 580 and I'm preparing for the os update (I'm scared! hahaha).

First, I need to change my system definition (Clover), from iMac 14.2 to iMac 15.1

I have some guides here to follow, but I need to know how I can backup my boot files, in case something bad happens with my config.plist file.

Last time I used multibeast, but now I have read that it is better to use clover, but I can't find any guide for extreme newbies, like me.

Can anyone help me with the next steps? Create a bootable USB flash backup drive?

THANKS, lots of thanks! :)
 
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