How to create a Lion OS X backup DVD from your purchased and downloaded copy of Lion OS X. In the following simple solution, I show you one way to create a backup copy of Lion OS X installer on a DVD or backup disc. Your copy might then be kept as a backup and used for future re-installation of the Lion OS X Operating System.
How to Make a backup DVD of your purchased Lion OS X
Assuming you just purchased and downloaded Lion from the Apple Store...
Once you are presented with the following screen, minimize it: 
- Start Disk Utility (Finder > Applications > Utilities > Disk Utility)
- (1) Open a New Finder Window and navigate to Applications (2) Right Click Install Mac OS X Lion, and (3) Select Show Package Contents
- From the Window that appears, Navigate to Contents > Shared Support and Right Click InstallESD.dmg and Select Burn "InstallESD.dmg" to Disc to write the image to your blank DVD
That's all there is to it. You should now have a backup of your purchased OS X Lion on a DVD!
