WinToUSB is the best Windows To Go Maker that allows you to install and run Windows operating system on a USB hard drive or USB flash drive, using an ISO image or CD/DVD drive as the source of installation. Starting from version 2.0, you can clone current Windows OS installation (Windows 7 or later) to a USB drive as a Windows To Go Workspace. WinToUSB also supports creating a bootable WinPE USB drive, it can help you transfer the contents of WinPE to a USB drive and make the drive bootable.

WinToUSB's key features include
• Easy-to-use wizard interface that provides step-by-step instructions for creating a Windows To Go USB drive.
• Creation of Windows To Go from an ISO image file or CD/DVD drive.
• Clone an existing Windows OS (Windows 7 or later) to a USB Drive as a Windows To Go Workspace.
• Use of a Non-Enterprise Edition of Windows 10/8.1/8/7 to create Windows To Go Workspace.
• Creation of Windows To Go on Non•Certified Windows To Go USB Drive.

Extra features of the Enterprise Edition
• Clone current Windows OS (Enterprise edition of Windows 10/8.1/8/7) to a USB drive as a Windows To Go Workspace
• Clone current Windows OS which on a dynamic disk to a USB drive as a Windows To Go Workspace
• Clone current Windows OS which on a USB disk (Windows To Go USB drive) to other USB drives as a Windows To Go Workspace

Important notes -
• Windows 7 is not completely portable. You may have driver problems when booting on different computers, so highly recommend using Windows 10/8.1/8 to create portable Windows.
• Windows 7 does not have built•in USB 3.0 support, so Windows 7 will have to be booted from a USB 2.0 port.
• The common USB flash drives are very slow. It takes a long time to install and run Windows from a common USB flash drive, highly recommend using a USB hard disk, a Windows To Go Certified Drives or a SanDisk Extreme CZ80 USB 3.0 Flash Drive to create portable Windows.
• Windows To Go drives can be booted on different computers, so you can carry it to anywhere and use it on any computer.
• You need to be an administrator on the computer you are installing the WinToUSB on