http://5ekxbftvqg26oir5wle3p27ax3wksbxcecnm6oemju7bjra2pn26s3qd.onion/releases/stable/i386/ch04s03.vi.html
If you use the wrong device the result could be that all information on, for example, a hard disk is lost. 4.3.1. Preparing a USB stick using a hybrid CD/DVD image Debian installation images for this architecture are created using the isohybrid technology; that means they can be written directly to a USB stick, which is a very easy way to make an installation media.