A Bootable USB Creator is a software tool that allows users to create a USB flash drive that can boot a computer. This is useful for installing operating systems like Windows or Linux directly from the USB drive, rather than using a CD or DVD. The process typically involves selecting an ISO file, which contains the operating system, and then transferring it to the USB drive in a way that makes it bootable. Using a Bootable USB Creator is often faster and more convenient than traditional methods. It enables users to easily carry their operating systems and installation files, making it ideal for troubleshooting or setting up new computers. Popular tools for this purpose include Rufus and UNetbootin.