If you’ve purchased Mac OS X 10.7 Lion from the Mac App Store, it’s useful to
make an installation disc in case your hard drive becomes damaged and you need
to repair it or reinstall Mac OS X. Just follow these steps:
- Choose Burn… from DropDMG’s File menu.
- In the Applications folder, double-click Install Mac OS X
Lion.app to open it. Then open the SharedSupport folder and
select the InstallESD.dmg file.
- Make sure that Burn contents of disk images is selected and
click the Choose button.
- Insert a blank DVD and click the Burn button.