Disk images can be used having optical drive: to burn the backup disk in the future, create backups. A disk image is a 100% copy of a physical disk in a single file.
To mount the image, right click on the ISO file or other disk image and go to "Mount archive". To remove a device later you can click on the icon to Remove in the sidebar.
In Linux, many of the actions commonly performed by a terminal, then open a terminal window and create a folder /mnt/image, which then mounts the ISO image:
sudo mkdir /mnt/image
Mount ISO in Linux:
sudo mount -o loop /home/USERNAME/Downloads/image.iso /mnt/image
where, /home/USERNAME/Downloads/image.iso — the path to your disk image file.
To unmount the ISO in Linux, use the command:
sudo umount /mnt/image