On the back of How do I open the Disk Utility in Unity?, how do you access
Disk Utility in other DEs like Xfce? And what exact packages need to be installed to access this functionality?
As per Which command do you execute to open Gnome Disk Utility (Disks)?, you need to install
gnome-disk-utility and then execute:
Alternatively, in Xfce you can go to
Settings > Disks.