UUByte WintoUSB Pro is a dedicated tool for creating Windows To Go USB (WTG) drive from various Windows image files, including Windows 10, Windows 8/8.1, Windows 7 and Windows Server. I like having different Windows versions (and languages) for different jobs - and with a laptop with fast USB 3 using an external SSD gives really good performance too so I used this quite a lot very successfully. The best WinToUSB alternatives are Rufus, WinToFlash and IsoDumper. WinToUSB is the best free 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. The newly created WTG USB drive can be directly run from a PC or Mac. Our crowd-sourced lists contains seven apps similar to WinToUSB for Windows, Linux, and more.

Last version, 3.1.10a, released on February 17, 2006, can be still downloaded from Wayback Machine. 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.

I'm experimenting now with VIBOOT as well as a small Linux system which will include a windows VM - for what I want windows to do a VM will work just fine and linux boots easily enough from external SSD.

Step 1: Plug the USB drive into your computer. With 500 GB external SSD I might have 4 or 5 Windows VM's - although not running all concurrently (against EULA - can run 1 at a time on this machine). Step 2: Install and run AOMEI Partition Assistant. Create Windows 10 Live USB with WinToUSB. In its main interface, click 'Windows To Go Creator' in the left panel. Download the WinToUSB software, install and launch it. Connect a blank USB drive to your computer. Select the ISO file you created and the version of Windows 10. Select the USB drive from the drop-down menu. Step 3: In the next screen, click 'Browse' button to specify the Windows 10 or Windows 8 installation file if it is not.

Win2usb