WinToUSB will install and run the 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.
If you have a Windows installation source (a DVD disc, an image file) and a valid Windows product key, you can use WinToUSB to install Windows on your USB drive.
WinToUSB's key features include:
Three steps to install/clone Windows to a USB drive Use any edition of Windows 8(.1)/10 to create Windows To Go USB drive Create Windows To Go Workspace on a Non-Certified Windows To Go USB Drive Support Windows 7/8(.1)/10 Technical Preview and WinPE 2/3/4/5 (32/64-bit)
Similar: How to Optimize USB Drives for Better Performance How-To Retrieve an Embedded Windows Key How to Transfer Your Windows 10 License to Another Computer How to Diagnose USB Problems How to Get Full Details About a Windows 10 Installation ISO