No, they aren’t. I feel like I’m taking crazy pills reading these comments. ubuntu.com/…/ubuntu-core-an-immutable-linux-deskt… fedoraproject.org/atomic-desktops/silverblue/ What is an immutable operating system? Before we can discuss what differentiates Ubuntu Core from other immutable operating systems, we must first define the properties that make an OS immutable: Read-only: The primary characteristic of an immutable OS is that the running system cannot be directly modified by users or applications. Atomic updates: Updates are applied atomically; meaning they’re successfully applied all at once or not at all. […]