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.

Conclusion Creating a bootable USB drive on Linux is an uncomplicated task with the right tool at your disposal. The tools listed above cater to a broad range of user expertise levels, making the ...

Now I have a bootable USB drive which can both install ML and run diagnostics. That’s exactly what I like to do with my USB installers.