Why package X is installed in your Debian When I was looking for alternatives to mount a USB flash drive without sudo, I came across udisks2. To my surprise, this package was already installed on my machine. I found these two methods to understand why: $ apt rdepends udisks2 --installed udisks2 Reverse Depends: Depends: gnome-disk-utility (>= 2.7.6) Depends: gvfs-daemons Recommends: fwupd $…