By far the easiest way to install Debian GNU/Linux is from a set of official Debian installation images. You can buy a set of CDs/DVDs from a vendor (see the CD vendors page). You may also download the installation images from a Debian mirror and make your own set, if you have a fast network connection and a CD/DVD burner (see the Debian CD/DVD page and Debian CD FAQ for detailed instructions). If you have such optical installation media, and they are bootable on your machine, you can skip right to Kapitel 5, Opstart af installationssystemet. Much effort has been expended to ensure the most-used files are on the first DVD image, so that a basic desktop installation can be done with only the first DVD.

Husk også: Hvis installationsmediet, du bruger, ikke indeholder de pakker, du skal bruge, så kan du altid installere disse pakker efterfølgende fra dit nye kørende Debiansystem (efter installationen er færdig). hvis du har brug for at finde en specifik pakke, så besøg https://cdimage-search.debian.org/.

If your machine doesn't support booting from optical media, but you do have a set of DVD, you can use an alternative strategy such as usb stick, net boot, or manually loading the kernel from the disc to initially boot the system installer. The files you need for booting by another means are also on the disc; the Debian network archive and folder organization on the disc are identical. So when archive file paths are given below for particular files you need for booting, look for those files in the same directories and subdirectories on your installation media.

Når installationsprogrammet er startet op, så vil det hente alle de andre nødvendige filer fra disken.

Hvis du ikke har et installationsmediesæt, så skal du hente installationsprogrammets systemfiler og placere dem på usb-drev eller en forbundet computer så de kan brugs til at starte installationsprogrammet op.