The storage module lets you display your storage infos.
You need to set the mount_point value to the mount point of your device.
The format can take multiple params: %free%, %used%, %total.
The unit can be either Gb, Mb, Kb, b
You can also set the rounding.
storage:
tmux:
format: "%free% / %total% Gb"
rounding: 2
unit: Gb # Optional, default to Gb
mount_point: /