How to use rufus to create Windows 8.1 or Windows 10 uefi bootable USB flash drive
Rufus is a utility that helps format and create bootable USB flash drives, such as USB keys/pendrives, memory sticks, etc.
It can be especially useful for cases where:
You need to create USB installation media from bootable ISOs (Windows, Linux, UEFI, etc.)
You need to work on a system that doesn't have an OS installed
You need to flash a BIOS or other firmware from DOS
You want to run a low-level utility