this post was submitted on 26 Apr 2026
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    [–] Tommelot@lemmy.world 2 points 2 hours ago* (last edited 2 hours ago) (1 children)

    Ive been using for almost 20 years and I don't even fully know what that means. How are data partitions bulk-mounted? Why would rootfs be ro or rw? Why would anyone care?

    [–] dan@upvote.au 5 points 2 hours ago* (last edited 2 hours ago)

    I haven't tried any yet, but my understanding is that recently there's been a trend of immutable Linux distros, where the root filesystem is immutable (read-only). Instead of directly changing stuff in /etc, installing apps, etc, you instead update some sort of config that says exactly how to set up the system, and rerun a script that rebuilds the root.

    System updates are atomic - either the whole update is completed, or the whole update is rolled back. If the system breaks, you can revert back to an old config file and restore it to exactly the same state as it was before.

    It's still not very common - the majority of Linux systems aren't doing this.