user-level: 0.920 mistranslation: 0.893 semantic: 0.856 device: 0.846 graphic: 0.826 peripherals: 0.815 performance: 0.798 architecture: 0.735 files: 0.721 network: 0.690 vnc: 0.683 permissions: 0.674 PID: 0.644 register: 0.642 kernel: 0.624 risc-v: 0.623 debug: 0.604 VMM: 0.596 ppc: 0.582 virtual: 0.553 socket: 0.549 TCG: 0.533 boot: 0.525 arm: 0.514 hypervisor: 0.471 assembly: 0.451 x86: 0.376 i386: 0.365 KVM: 0.221 -------------------- user-level: 0.942 virtual: 0.545 x86: 0.212 hypervisor: 0.178 TCG: 0.118 network: 0.085 files: 0.056 socket: 0.051 device: 0.031 kernel: 0.025 VMM: 0.020 i386: 0.014 debug: 0.013 risc-v: 0.007 PID: 0.007 peripherals: 0.006 semantic: 0.005 architecture: 0.005 register: 0.004 ppc: 0.004 assembly: 0.003 boot: 0.003 vnc: 0.003 performance: 0.002 KVM: 0.002 permissions: 0.002 arm: 0.001 graphic: 0.001 mistranslation: 0.000 Can't install virtio block drivers during Windows setup Hi! Apparently there's no way to install the virtio block drivers during Windows setup, as they're simply not recognized by the installer when it looks for them on the CD drive. The only way to setup virtio block drivers is to first install Windows on a IDE drive, then add a dummy virtio disk, then load the drivers and swap the two disks. I'm using virtio-win-0.1-81.iso. I can confirm the issue with Windows Server 2012 R2 and Windows 7 Professional, 64 bit. Thanks! Looks like nobody replied here within the last three years ... closing this now, since this is not directly a QEMU problem. You should likely report it to the virtio-win driver folks instead if the problem still persists.