Hosts/W32 - QEMU
wiki.qemu.org › Hosts › W32QEMU is based on Mingw-w64, so some commonly used UNIX device names like /dev/null or /dev/zero can be used. W32 device names also work, especially names like //./PhysicalDrive0 for the first hard disk of the host (this name must be used with extreme care or you will likely crash your system).
Hosts/W32 - QEMU
https://wiki.qemu.org/Hosts/W32QEMU on W32 and W64 hosts. This documentation is work in progress - more information will be added as needed. It will finally replace the old documentation from the QEMU user manual. I think that a wiki is better in keeping evolving documentation like this one up to date.