Sorry for the previous hijacked thread. The problem is I get error instead of mounting a drive: Unable to mount this device. Potential reasons include: Improper device and/or user privilege level Corrupt data on storage device Technical details: org.freedesktop.UDisks2.Error.NotAuthorizedCanObtain: Not authorized to perform operation I checked my groups. They are: disk, floppy, cdrom, vboxusers, root. Aren't they enough?