The age of computer technology has created a society of people who do not carry briefcases filled with files anymore. Rather, they carry external hard drives and music players. At least I do anyway but the point is, those things can crash the same way a computer can which is why it is important to know how to recover external hard drive files when the time comes. You should back up all your files on a regular basis anyway but when the crash comes, all you have to do is download a program.