The SysInternals team just announced the availability of a new tool: Disk2vhd.
This is a tool that you run on a running Windows computer to create virtual hard disks copies of the physical disks that are attached. Under the covers this tool works by taking a Windows Volume Snapshot (VSS) image of the physical hard disk – and then pouring that into a virtual hard disk.
There are a number of cool uses for this – with a “poor mans P2V” leading the charge. One thing that you should be aware of is that this tool does not change the drivers / HAL that is used in a system drive – so you may need to take manual steps to make the VHD actually boot in a virtual machine.
Another potential use is to allow you to move a physical installation of Windows 7 to a “boot from VHD” configuration.
You can download this tool here:
It is supported on Windows XP SP2 / Windows Server 2003 and higher.