We recommend a USB flash drive for your backup installer they're cheap and easy to store and transport.

Mountain Lion installer app downloaded from the Mac App Store.

An 8GB or larger USB flash drive, other external disk, or 4.7GB DVD-R.

Therefore, you need to either make a copy of the installer outside of the Applications folder or make your install disk before upgrading. Important warning: the OS X installer will delete the necessary file needed to make your own install disk once it runs. We have instructions for those of us who just want to get it done-using the donation-ware Lion Diskmaker app-as well as those that don't mind a little extra clicking to do it yourself. Do you really need to wait 45 minutes or more for each one? Absolutely not! Just make your own bootable install disk using our handy tutorial. You can follow us on Twitter or join our Facebook fanpage to keep yourself updated on all the latest from Microsoft, Google and Apple.Happy Mountain Lion Day! Now that you have downloaded the 4.34GB installer, you may want to install Mountain Lion on more than one of your personal machines. Lion DiscMaker is a free application and can be download from the link embedded below.ĭownload Lion DiscMaker This will allow you to download Lion again. If you don’t have a copy of Lion available (the file is erased automatically when you move from Snow Leopard to Lion), you will have to download it again by opening up its page on Mac App Store and then pressing the Option/Alt key. Now that we’ve mentioned its good side, let’s talk a little about its limitation: Lion DiskMaker will not work if you’re on a Mac with OS X Lion pre-installed (like the new MacBook Air).

Then, it proposes to build a DVD or create a USB bootable install disk. Lion DiskMaker is a small application programmed with AppleScript that you can use with Mac OS X 10.6 or 10.7 to burn a DVD or build a bootable USB key from Mac OS X Lion’s Installation program.Īs soon as you launch the application, it checks the presence of Mac OS X Lion Install in the /Applications folder, or tries to find one using Spotlight.

Copy dvd on mac os x lion