You have been subscribed to a public bug: In Kubuntu's System Settings->Advanced->Disks&Filesystem:
After selecting modify/new an entry not in fstab, that first entry is remembered in future dialogues, also for other partitions, thus it becomes impossible to change any settings ** Affects: kde-systemsettings (Ubuntu) Importance: Undecided Status: Unconfirmed -- Kubuntu: Disks&Filesystem remembers wrong settings https://bugs.launchpad.net/bugs/104859 -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs