This patch was originally submitted via https://gitlab.com/libvirt/libvirt/-/merge_requests/19 That merge request contains additional information, if you find the commit message of the patch lacking in some way. It did pass CI and the test suite four weeks ago, seems small enough, and the rebase had no conflicts, so I didn't run the tests again on current master. And based on the comment from Peter Krempa in that merge request, it probably needs further discussion with QEMU developers. FWIW: while the installer generally works, I'm experiencing massive timeouts from the "Out of Box Experience" (OOBE) part of the Windows configuration after the install. And the latest ISOs don't even start in QEMU (5.1 and older) for me on Debian, so I used 1909 instead of the 2004 ISO "releases". I'm running the aarch64 system QEMU on x86_64 Debian Buster with my current QEMU build. Jan-Marek Glogowski (1): QEMU: support USB cdrom devices src/qemu/qemu_command.c | 21 ++++++++++++++++++- src/qemu/qemu_command.h | 1 + src/qemu/qemu_domain.c | 2 +- .../disk-cdrom-bus-other.x86_64-latest.args | 12 +++++------ 4 files changed, 28 insertions(+), 8 deletions(-) -- 2.20.1