In this video we look at managing loop devices on CentOS 8. Using loop devices gives you access to additional storage devices on your system. This could be a laptop where you only have a single disk or cloud servers where you don't want to add the cost of extra storage. Using CentOS 8 in AWS we show how you can still learn for your RHCSA and other certification without adding physical storage. Using systemd we can persist the loop devices and a sample unit file is shown: /etc/systemd/system/losetup.service [Unit] Description=Set up loop device DefaultDependencies=no Before=local-fs.target After=systemd-udevd.service Required=systemd-udevd.service [Service] Type=oneshot ExecStart=/sbin/losetup /dev/loop1 /var/disks/disk1 ExecStart=/sbin/partprobe /dev/loop1 Timeout=60 RemainAfterExit=no [Install] WantedBy=local-fs.target Additionally you can find my video courses on Pluralsight: http://pluralsight.com/training/Authors/Details/andrew-mallett and take time to see my own site http://www.theurbanpenguin.com/