The key appeal of UNetbootin is that is the simplest choice of software for applications that might seem daunting to beginners. UNetbootin doesn’t erase any files as it doesn’t have the ability to format your USB flash drives or external hard drive devices. While the primary application of this open-source software is to make a bootable USB drive, UNetbootin can also be used with any kind of USB storage device, such as external hard drives. Unetbootin | Windows Unetbootin | MacOS Unetbootin | Linux This software is designed to be cross-platform and works with Windows, as well as Mac and Linux operating systems. UNetbootin (short for “Universal Netboot Installer”) is software that allows you to easily create bootable USB flash drives to install or use operating systems.