How to reduce the size of a disk

Issue

The disk is oversized for what we are using
What is the best method for resizing the disk from 64GB to the more appropriate 20GB from OS

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Here are the common uses of Markdown.

Code blocks

~~~
Code surrounded in tildes is easier to read
~~~

Links/URLs

[Red Hat Customer Portal](https://access.redhat.com)