How do we get UEFI bootloaders other than the default Windows one working with the z270 Classified K? What am I doing wrong.

Installed rEFInd to my ESP to get Fedora to boot under \\EFI\\rEFInd. Reboot.

Go to bios and go to boot override. It's not listed. Okay, I'll just add it.

Go to the boot section to add a boot option for it... No option to add or remove boot options... that's frustrating... But fine... Reboot.

Boot a Fedora live USB, use efibootmgr to manually add a boot entry for rEFInd... I should be good now right? Reboot. Nope still nothing.

Finally get fed up and move rEFInd to the default boot directory... \\EFI\\BOOT\\BOOTX64.EFI. Reboot. Still doesn't work...

Why does this UEFI implementation not even read the default freaking bootloader? It just ignores it and jumps straight to the windows one... How do we use non-Windows OSes on this board?

Update: got a workaround set up by booting rEFInd off a USB stick, but this is more a short term patch than a long term solution for what I hope are pretty obvious reasons.

You could be - everyone seems to be in the graphic card area  trying to step-up  :-)
 
I was only trying to dual boot win-10 and that only sort of worked.
 
My plans to try this  motherboard as a hackintosh are on the back burner.