After the Windows virtual machine has been shut down, its entire disk can be uploaded
to Eucalyptus as an HVM image.
Extract the disk from the hypervisor into a file.
With KVM, the disk may already be a file in raw format. If it's a file
in a different format, convert it into raw disk format. If it's a block
device, you can use 'dd' utility to copy contents of the block device into a