Right now Linux Ubuntu is on 21.4 GB of my 110 GB disk space according to Disk Usage Analyzer. While downloading Linux I clicked the option that, I thought, would put Linux on my entire disk space and not just a small partition.
How is the simple way to put the remaining 90 GB of disk space into the "/" of Linux Ubuntu
(Not into computers, Linux was faster than Mac OS X for gaming)
Mac-Book Pro 2016 with Retina 8GB RAM