# Building Your Own NixOS CD

Building a NixOS CD is as easy as configuring your own computer. The idea is to use another module which will replace your `configuration.nix` to configure the system that would be installed on the CD.

Default CD/DVD configurations are available inside `nixos/modules/installer/cd-dvd`.

    $ git clone https://github.com/NixOS/nixpkgs.git
    $ cd nixpkgs/nixos
    $ nix-build -A config.system.build.isoImage -I nixos-config=modules/installer/cd-dvd/installation-cd-minimal.nix default.nix

Before burning your CD/DVD, you can check the content of the image by mounting anywhere like suggested by the following command:

    # mount -o loop -t iso9660 ./result/iso/cd.iso /mnt/iso