The creation of an ISO image is not attributed to all burning software. If your burner does not have this feature, you can use Undisker to do this task.
Undisker is a software to create, to rip or to open an ISO file. It offers you an interface where you only have to drag and drop so as to add or to rip a disk image. This latter is displayed on the Windows Explorer and can be viewed with a double click on it. For beginners, an ISO image is an exact copy of a CD-ROM containing the binary data of the original disk. It is convenient to create a backup of your important data on CD or DVD.