1. Image file mounting via loop-back
- udisksctl loop-setup -f ~/fat.img
-> Icon appears under "Devices"
- unmount via context-menu in dolphin
-> device icon stays in "Devices"
- set "Auto-clear" flag on loop (e.g. losetup --detach-all)
- remount
- unmount
-> device icon vanishes from "Devices"
2. CD-ROM/DVD
- icon appear when a non-blank medium is inserted
- vanishes on medium removal
3. USB stick
- for each mountable filesystem, an icon appears under "Removable devices"
- formatting a partition with a non-mountable filesystem/blank removes the entry
- formatting with a mountable FS (re)adds the entry