Firstly, USB thumbdrives are typically slow (although you can get faster hardware at a higher cost) and on top of that, Windows Vista / 7 / 2008 do not have built-in USB 3.0 support and so this will only work from a USB 2.0 port with those operating systems.

NOTE: Do not expect this tool to be a perfect solution for running Windows from USB.

Don't need install WAIK (Windows Automated Installation Kit) or WADK (Windows Assessment and Deployment Kit).

Use any edition of Windows 8(.1) to create Windows To Go USB drive.

Install Windows from ISO image or CD/DVD drive.

Easy-to-use wizard interface that provides step-by-step instructions for installing Windows on USB hard or flash disk.

With WinToUSB, you can install and run Windows operating system on USB hard or flash disk from an ISO image or CD or DVD media. iso file to the USB drive can take 20 minutes or longer.WinToUSB is a tool that lets you run Windows on a USB hard disk or flash drive.

If prompted, confirm your action and/or provide an administrator password.

iso file after selecting it, click Continue.

Your USB drive should be listed in the 'Destination disk' area.

Check Create a Windows 7 or later install disk and click Continue.

Uncheck the Install Windows 7 or later version and Download the latest Windows support software from Apple options.

Verify that the USB drive you will be writing to is plugged in.

You don't need to install Windows or download the support software at this time, as it will be easier to do both later.

UITS recommends making the USB drive installer first.

The next screen should give you a list of options.

Open the Boot Camp Assistant, and then click Continue.

From the Finder, open the Applications folder, and then Utilities.

If your Mac has an optical drive, the option will be either missing or grayed out.

In macOS, the option to create a Windows flash drive appears only when the computer does not have an optical drive.

Wintousb al