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Chapter 1. Installing Ubuntu > Step-by-Step Installation
Step-by-Step Installation
This section provides a basic step-by-step installation of Ubuntu from the install DVD included with this book, but these instructions also work with media you create yourself using an ISO image you downloaded and wrote to a disk or USB drive using the instructions provided earlier; just replace mentions of DVD with your install medium. The install process itself is fairly straightforward, and you should not encounter any real problems.
Warning: Back Up First
If you have anything at all on your computer that you want to save, back it up first. Installing an operating system has become easier to do, but it is still a major change. Your entire hard drive will be erased and new information written to it. This is expected when installing Ubuntu to the entire hard drive, but can even happen due to user error or gremlins (unexplained problems) when attempting a dual boot installation. Back up anything you want to preserve. Save data and files to an external hard drive or other medium. You can even back up your entire operating system and current installation using something like Clonezilla (http://clonezilla.org). Whatever you do, go in with the perspective that everything currently on the computer will disappear. If this is okay, continue.
