After QEMU Manager 7.0 installation:

  1. Create a new VM from Qemu Manager
  2. Type a name for the new VM > Next
  3. Select, “do not use an image” > Next
  4. Output, “QEMU Manager Default” > Finish
  5. Then under the “Advanced tab of the new VM properties, set in Additional QEMU parameters with:
[text]-hda //./PhysicalDrive2[/text]

Note: If the USB doesn’t boot, then you may have something wrong with the MBR. Try deleting
the whole drive and reformat it (make sure the drive is partitioned as “Primary” volume,
because a “Logical” volume will not boot!