I have a question. I already created the EFI boot on a USB stick. But can I still install any software in the USB stick? For example, download games in the USB stick while using it as an EFI boot. Will if influence the booting of the system?
Looking forward to your reply
I followed your step and I can successfully use my RX5700 XT with an external display. I have the same issue as you that the error 43 will appear if I didn't use an external display. So, have you figured out any solution that error 43 disappears when not using an external display?