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.

Rufus creates bootable USB sticks for Windows, Linux, and other OS. We'll show you how to use it.

A bootable USB key is a convenient way to install operating systems on netbooks without optical drives, or carrying around a Live OS with you at all times. It especially makes sense if you're ...

How to make a bootable USB drive 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.

Most IT professionals carry a bootable USB with recovery software, Antivirus scanners, Bootable Linux, etc. But the problem is that they need multiple USB drives for each image. Here is a solution ...

Create an installation drive In the next step, we will explain how to create a bootable drive, which you can use to install Ubuntu on your desktop PC or notebook.