What would you like to see improved in Qubes OS?

[apparatus]

You can try this:

Installed Qubes to external drive, is it possible to boot win drive as VM?

You can try this: Create HVM, set uefi feature for it: qvm-features <vm-name> uefi 1 Add ovmf.bin in your dom0: Unmount the EFI System partition from Qubes OS: sudo umount /boot/efi Presistently attach the EFI System and Windows partitions as block devices to your qube: qvm-block a --persistent qubename dom0:nvme0n1p1 qvm-block a --persistent qubename dom0:nvme0n1p2 Boot from qube and if you end up in startup.nsh shell then enter exit to enter UEFI menu and in Boot Manger select WIndows…

I didn’t try it with WIndows, but Linux OS worked for me.