Windows Portable Workspace on a USB?

What we are talking here is not portable applications or something like that. It is about carrying the whole PC environment on a USB to any accessible PC or laptops. If you want to experiment with Windows To Go but do not want to order a new certified USB drive, you can create your own Windows To Go USB drive. Get ready a 32 GB or larger USB 3.0 drive (it can also be an external hard drive) and build the USB drive on at a Windows 7 or 8 PC. Another thing you need is Windows 8 DVD ISO and Windows 8 Developer Preview Product Key. The process is a little complicated in my view.

What if you are using Windows 7, XP, Vista or older systems and you don