chrisfromgreece
I just install 9.3 using GPT with an amd64 9.3 USB image, it works fine, but I got a warning message when I use etcher to make a bootable USB with amd64 9.3 ISO:
Missing partition table
It looks like this is not a bootable image. The image does not appear to contain a partition table, and might not be recognized or bootable by your device.
and my laptop can't boot with it. Do you install with amd64 9.3 ISO?