There are many tools and applications available to create bootable disks in Linux. If you prefer command line way, there is dd command to do various things, like creating a USB drive or cloning disk ...

One of the most simple and easy ways to create a bootable USB drive for Linux is with Rufus, which will create a bootable drive in a matter of a few clicks. When you have decided to switch from ...

Creating a bootable USB drive let's you get hands-on experience with Linux without necessarily overwriting your system.

Create a bootable Linux USB from macOS Plug the USB drive into your Mac system and open the Terminal app (just search for Terminal in Spotlight).

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.

His app automates the process of making a bootable install disk for both Lion and Mountain Lion—just run the app and let it do its thing.