How to Burn a Disc on a Mac

1. Insert a blank disc.
2. Start Disk Utility.
3. From the File menu, choose Open Disk Image and select the ISO to be burned.
4. In the list of volumes, you will now see an item representing the ISO file. Select it.
5. Click the Burn button and follow the instructions.

If your burning something over 4.7GB You will probably use a Dual Layer Disc, which requires a Superdrive to burn.