So you downloaded an .iso or .dmg file, and now you want to burn it to CD or DVD on your Mac. Fear not! No extra software is required.

The delightfully useful Disk Utility built into OS X can burn disk images to optical media in a few easy steps. Read on for how to go about burning your new disc.

Windows users: You should check out the free ISO Recorder for similar functionality.

Launch Disk Utility (Applications > Utilities).
Insert your blank DVD or CD.
Drag and drop your .dmg or .iso file to th...