Image creation

Any device running Ubuntu Core is instantiated from an image. This image contains the kernel, an init process, and a few essential tools.

Customising and adding to Ubuntu Core images is a fundamental part of how Ubuntu Core operates, whether that’s on an established platform, or by creating an image for a new platform.

Modify and create images

Create an image from the command line, optimise its boot speed, then change its configuration.

• Use ubuntu-image

• Optimise boot speed

• Add custom snaps

• Add a splash screen

• Add console-conf

Board enablement

Pre-built images are available for testing a range of devices. See Testing Platforms for further details.

Board enablement, however, is the term we use for building an Ubuntu Core image for a new hardware platform, and there’s a well established process for accomplishing this.

• Board enablement

• Calculate partition sizes

• Build a gadget snap

• Build a kernel snap