It takes just a few minutes to create a bootable Windows 10 USB, but it can save countless hours if your OS breaks down and you don't have a spare PC to hand. No matter how technically-minded you are, it's always smart to have a Windows 10 boot stick to hand. 3 How to Create a Windows 10 Bootable USB fro ISO via the Windows 7 USB/DVD Download Tool (Legacy).2 How to Put Windows 10 on a USB Drive via ISO with Rufus (Legacy or UEFI).1 How to Create a Windows 10 USB via the Media Creation Tool (UEFI or Legacy).