Here is a simple method more duplicating CDs or DVDs using Disk Utility in Mac OS X.
- Insert the CD or DVD you want to copy into your Mac.
- Launch Disk Utility (in the Applications > Utilities folder).
- In the Finder, drag and drop the icon of the CD or DVD onto the Disc Utility icon in the Dock.
- A window will open asking you to name the new disk image, and where to save it. Give it a name and save the image to the Desktop. In the Image Format drop-down menu, choose DVD/CD master (no encryption is necessary). Click Save, and a new disk image (with the extension “.cdr”) will be created on your Desktop.
- Eject the original CD (the one you just copied), and insert a blank CD into your Mac.
- In Disk Utility, look for the disk image of your CD or DVD (the “.cdr” file you just created). This is on the left-hand side of the window, at the bottom of the list of mounted drives. Select the image (the “.cdr” file) and click Burn.
- When you are done, eject the burned disk and delete the “.cdr” file from the Desktop.