A bootable Linux USB drive is a versatile tool that lets you run a Linux operating system (OS) directly from a USB stick, without installing it on your hard drive. Whether you want to test a new Linux distribution (distro), install Linux on a computer, troubleshoot a broken system, or carry a portable OS, a bootable USB is essential.

Creating one might seem technical, but with the right tools and steps, it’s straightforward. In this guide, we’ll walk you through everything you need to know—from prerequisites to troubleshooting—to create a reliable bootable Linux USB drive, regardless of whether you’re using Windows, macOS, or Linux itself.