Version: (using KDE 4.2.90) Installed from: Ubuntu Packages Local disks not in fstab, but shown in Places, do not show where they are mounted or what the partition name is. There is no way to identify the disks. Please add the needed info. Thanks.
See also related bug 196939 for the Device Notifier plasmoid.
And in Dolphin 20.08 https://invent.kde.org/system/dolphin/commit/c81927651a6f50af860b21d1be5c04bb4295b7cc