So I've been trying to get ReactOS installed on the Windows QEMU build from
https://qemu.weilnetz.de/ and during the file copy part of the first stage
installer the thing, slows down. Substantially. And then silently comes to
a standstill. I'm not sure whether this is an I/O issue in ReactOS or what,
the old qemu that we used for the older 0.3.x releases didn't have this
problem. Anyone have any ideas?