Windows 10 VM - No bootable device

Playing around with Harvester and wanted to create a Win10 VM. I downloaded the latest ISO and used the built-in windows template, but it doesn’t ever seem to be able to find the boot device:

I tried slipstreaming the VirtIO drivers into the ISO, but that didn’t seem to help either. Should this work or am I missing something simple?

The volumes look like this:

I doesn’t look like there is support yet for OVMF and UEFI firmware.