Quick question, I am trying to do a fresh headless install of DietPi on a Native PC, but I can’t seem to find the Write image to download, flash and edit the dietpi.txt file. There is one for the “Native PC for BIOS/CSM”. Is this correct? Or am I missing something?
yes correct, this is not possible on all Native PC version. You need to perform the initial install to write the image down to disk. And yes, this would require direct access. However, you could try the Bios version if not strictly required a UEFI version.