NixOS ISO images can be downloaded from the NixOS homepage. These can be burned onto a CD. It is also possible to copy them onto a USB stick and install NixOS from there. For details, see the NixOS Wiki. As an alternative to installing NixOS yourself, you can get a running NixOS system through several other means: Using virtual appliances in Open Virtualization Format (OVF) that can be imported into VirtualBox. These are available from the NixOS homepage. Using AMIs for Amazon’s EC2. To find one for your region and instance type, please refer to the list of most recent AMIs. Using NixOps, the NixOS-based cloud deployment tool, which allows you to provision VirtualBox and EC2 NixOS instances from declarative specifications. Check out the NixOps homepage for details.