timdoug's interesting tidbits

Little bits of technical documentation and such. Hopefully helpful.

2020-04-19

Running a Windows 10 virtual machine with QEMU on macOS

Microsoft distributes a freely available image, but there are a few steps necessary for it to work with QEMU.

  1. Download the VirtualBox image and unzip.
  2. The .ova file is a tarball; extract.
  3. The .vmdk file is compressed, in a format to which QEMU can't write, resulting in Could not write to allocated cluster for streamOptimized errors. Convert to qcow2 with qemu-img.
  4. Start a modern system, using Hypervisor.framework, 4GB of RAM, and userland networking forwarding the RDP port as the VGA driver is functional but suboptimal:
    qemu-system-x86_64 -machine q35 -accel hvf -m 4096 -nic user,hostfwd=tcp:127.0.0.1:3389-:3389 -hda WinDev2003Eval-disk001.qcow2

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