If you're trying to install a new operating system or flash your BIOS, you're going to need a bootable USB drive - here's how to make one.

USB drives can also be used to set up a thumb drive as a booting device for BIOS as well. For this, the thumb drive needs to be formatted in FAT format and must have the required boot sector file ...

Need installation media to reinstall Windows? Here's how to create a bootable CD, USB, or DVD with an ISO from scratch!

A bootable USB drive is a convenient disk for installing an operating system. Some modern computers don't have a CD/DVD drive for installing or upgrading an operating system.

This FAQ will show you how to create a bootable USB drive to install Windows 7, Windows Vista, Windows 8, and Windows 10.

Perhaps they referenced this guide to create a bootable Live USB on Windows, allowing them to test drive something like Ubuntu without making any changes to their PC.