Where is BOOTX64.cfg?

[ChrisA]

I think BOOTX64.cfg was for Qubes OS 4.0 (booting Xen directly), where Qubes OS 4.1 uses GRUB (and grub.cfg).

Searching this forum, I found:

Is Macbookpro 2020 (intel) supported? IMG IN

If it has function keys (F1 F2 F3 etc.), then yes. —— Ok, so that’s from the Qubes OS installer ISO. You’ll probably need to add some extra kernelopts to GRUB. I’ll explain how to do that: When you see the GRUB menu, immediately highlight “Test this media and install Qubes OS” Press “E” to edit the config file Add mapbs=1 noexitboot=1 to the kernelopts. Press Ctrl + X or to boot This should explain things a bit better:

… and from that, it sounds like mapbs=1 noexitboot=1 should be added like

   module2 /images/pxeboot/vmlinuz ... quiet mapbs=1 noexitboot=1

… but that sounds like what you’ve tried already.