This tutorial will show you how to make your USB hard disk device a bootable Linux system. Linux Mint 11 needs about 4.7 gigabyte of free space on your hard drive, so make sure your device has at least that much space available. I am using an 8 gigabyte stick which is enough to install Mint on it and additionally have some space left to save data. In my case, I will install Linux Mint 11 on my USB device, but it should work similarly with other systems. To create a bootable disk, you need either an iso-image of the desired Linux system or a real Linux DVD.