Core elements

Ubuntu Core is built from the same artefacts as the corresponding Ubuntu LTS release, such as Ubuntu 24.04 LTS (Noble Numbat) and Ubuntu 22.04 LTS (Jammy Jellyfish) for core24 and core22 respectively.

Understanding how these elements come together is key to getting the most out of the system.

Layout, storage and snaps

How everything fits together, and how Ubuntu Core is different from a traditional classic Ubuntu system.

• Inside Ubuntu Core: Volume layouts, boot process, snap layout and the REST API

• Storage layout: Layouts in more detail, including description for each specific partition

• Snaps in Ubuntu Core: Which snaps are using by default, and why