Just split off one of the bigger directories on your system, e.g. /var
. Or you can create multiple partitions out of the free space and split off even more.
Difficulty: ★★★☆☆
Introduction
As you should all already know by now, GNU/Linux is a FLOSS variant of the UNIX operating system design, and UNIX does not know the concept of drive letters, nor does it approach storage from the vantage of having different volumes. Instead, everything is mounted into a uniform directory hierarchy, so that regardless of what physical medium any particular group of files resides on ─ even if this physical medium is actually located in another computer across the …