Creating a Windows To Go Flash drive

Windows To Go is a new feature in Windows 8 Enterprise Edition that enables you to provision a USB drive with a complete, managed Windows 8 system image. You can insert the USB drive (known as a Windows To Go workspace) into any Windows 7 or Windows 8 host computer to boot and run a managed Windows 8 system without installing any software on the host computer.

Go get the overview doc at http://www.microsoft.com/en-us/download/details.aspx?id=36184