qemu especificar RAW
# The -drive option takes parameters that look like this:
qemu-system-x86_64 -drive format=raw,file=x86-64.img
# ... you need to use commas between its "sub"-options, not spaces.
#For example, here is one I tested to boot a Debian Installer CD:
qemu-system-x86_64 -drive format=raw,media=cdrom,readonly,file=debian-8.2.0-amd64-DVD-1.iso
silvio2402