Kinda. Generally the user files (including custom installed applications) are on a rw partition. Whereas the system files (OS files, root folder, etc) are on a ro partition. When updates are applied to the core system they come as complete images. No compiling from source on the fly.
The advantages to this is that it should be near impossible to break your system. If you need to roll back to a previous version the system just/downloads/mounts the previous image. There is less flexibility in terms of changing system files. But the idea with immutable distros is that you shouldn’t be modifying system files anyways, and there are different ways to accomplish things.
A really good example is Android. Android (non-rooted) is kinda-sorta an immutable distro. Except it uses an A/B partition method, where the active system downloads and installs to the other partition, triggers a flag, then a reboot picks up the flag and boots from the newly installed partition. If anything goes wrong, another flag is triggered and it boots from the “good” partition.
It’s not quite the same, but at a high-level it kinda is.
Kinda. Generally the user files (including custom installed applications) are on a rw partition. Whereas the system files (OS files, root folder, etc) are on a ro partition. When updates are applied to the core system they come as complete images. No compiling from source on the fly.
The advantages to this is that it should be near impossible to break your system. If you need to roll back to a previous version the system just/downloads/mounts the previous image. There is less flexibility in terms of changing system files. But the idea with immutable distros is that you shouldn’t be modifying system files anyways, and there are different ways to accomplish things.
A really good example is Android. Android (non-rooted) is kinda-sorta an immutable distro. Except it uses an A/B partition method, where the active system downloads and installs to the other partition, triggers a flag, then a reboot picks up the flag and boots from the newly installed partition. If anything goes wrong, another flag is triggered and it boots from the “good” partition.
It’s not quite the same, but at a high-level it kinda is.
Edit: article I found about it
https://linuxblog.io/immutable-linux-distros-are-they-right-for-you-take-the-test/