On Fri, Jul 30, 2021 at 4:17 PM <regloff@gmail.com> wrote:

I think I'll deploy a new Windows guest and try the 'VirtIO-SCSI' interface and see if my performance is any better. It's just a default install of Windows at this point, so that'll be easy. :)

I think it should work also this way:

. hot add a disk to your Windows VM with size small as you want (eg 1Gb) and configure it as virtio-scsi.

. in windows os when it asks for a driver, you provide what you need (the virtio-win iso) and let windows configure

. eventually restart windows to verify all is ok

. shutdown the vm and set the boot disk as virtio-scsi

. power on the vm

. windows should auto configure it and perhaps reboot and you are then done

. remove the second disk

Gianluca