You can just use the Disc Utility that comes with OS X. Stick the disc in the CD drive, and select it in Disc Utilitys list of disks and volumes. Choose File > New > Disc Image from [name of disc]. Type a name for the disk image. Choose compressed or read-only from the Image Format pop-up menu. Choose compressed to create a smaller disk image. Choose read-only to create a disk image thats quicker to create and open. Click Save. After Disc Utility creates the disk image, eject the original disc. Select the disk image in the list of disks and volumes, and choose Images > Burn. When the Burn Disc dialog appears, insert a blank disc, and then click Burn. You can use the disc image as a backup and burn it whenever you want.