Filesystem Type Size Used Avail Use% Mounted on /dev/sdb1 ext4 220G 30G 179G 15% /usr tmpfs tmpfs 3.9G 0 3.9G 0% /usr/share/runtime/share/themes none tmpfs 3.9G 68K 3.9G 1% /.flatpak-info tmpfs tmpfs 784M 64K 784M 1% /run/host/monitor udev devtmpfs 3.8G 0 3.8G 0% /dev tmpfs tmpfs 3.9G 0 3.9G 0% /dev/shm tmpfs tmpfs 3.9G 0 3.9G 0% /home/XXXXXXXXXXXXXXXXXXXXXXXXX tmpfs tmpfs 3.9G 0 3.9G 0% /home/XXXXXXXXXXXXX /dev/sr0 udf 3.1G 3.1G 0 100% /media/XXXXXXXXXXXXXXXX tmpfs tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup tmpfs tmpfs 3.9G 0 3.9G 0% /tmp/.X11-unix tmpfs tmpfs 784M 2.8M 781M 1% /run/systemd/journal/socket