After lots of fuckery with UEFI, I finally managed to install (and boot into!) Qubes OS - in legacy (MBR), but whatever. I am so excited!

I feel your pain with the UEFI shit but yay for qubes 👊🏼

@badcopnodonuts After I managed to get the installer to load (strike 1) and after I got the installation process to actually finish (strike 2), the newly installed system didn't boot at all (strike 3). I tried some things in rescue mode (from the install media), but to no avail.
Then I just said fuck this UEFI shit, cleared the drive with gparted, loaded up the installer in legacy mode and finally managed to boot into that sweet, sweet "reasonably secure" system.

@angrysnekguy I have so much pain in my life, this feels rather like tickling.

@saucyatom That’s funny because that’s basically all I’ve ever done when dealing with that scenario 😂