Gparted doesn´t show both SSDs and full disk space

That`s why I was installing gparted to get to know how Qubes partition the SSD and how much space it used for the partitions.

How can I copy files and folders to the SSD, when it doesn’t show up?
e.g. I have 100 GB of data and I want to insert it into my personal Qube. What can I do?

For example I copied many pictures/images to a folder but it said: not enough space there. So it copied only some of them. What can I do now to increase my space in my personal qube.