scenario: you have a windows server 2019 failing to boot with INACCESSIBLE_BOOT_DEVICE and changing the
disk type to ide or something else causes another bsod. how to you get it to boot up again without
a physical machine?
download the stable virtio drivers from here, in iso form: https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/stable-virtio/virtio-win.iso
add the iso to your qemu/virt manager config as a cd/dvd drive
windows should send you to the recovery mode screen, but if it doesn't you might have to run a windows install iso to get to it.