install windows 8.1

How to create a portable version for Windows software with Cameyo
cameyo is a free portable application creation tool, creating a single executable (.exe) file from the entire windows program. copy this single file to an external usb flash drive or hard drive, so you can run the program on any windows computer without installing it.
How to install Windows 8.1 from USB
in addition to installing windows 8.1 from a traditional dvd, we can install windows 8.1 from a usb flash drive with a simple and fast way to do it.