OS X Lion Clean Install

Apple released OS X Lion on Wednesday, July 20th as an App Store download. Although the OS X Lion installation is a¬†seamless upgrade process, Apple did leave out the option for users to perform a clean installation of OS X Lion as part of the App Store release of the operating system. Fortunately however, it is fairly easy to create a bootable OS X Lion installation DVD so that you can perform a clean installation of Apple’s newest operating system should you decide to do so.

Create A Bootable OS X Lion Installation DVD.

1. Log onto the Apple App Store and purchase OS X Lion.

2. Click on the install button and OS X Lion will begin to download. It took about an hour for the OS X Lion download to complete on my home Internet connection. Once downloaded, an application called Install Mac OS X Lion.app will have been copied¬†into your Applications folder. We don’t want to begin the actual OS X Lion installation process so be sure not to launch the installer.

3. Right click on the OS X Lion installer icon and left click Show Package Contents. Look for the SharedResources folder and then double click on the file called InstallESD.dmg.

4. Now go to Applications => Utilities and launch Disk Utility

5. Insert a blank DVD into your Mac’s Super Drive.

6. From within Disk Utility you’ll want to click on InstallESD.dmg and then click on the Burn icon.

You now have a bootable OS X Lion installation DVD that you can use to perform a clean installation of OS X Lion on your Mac.

This entry was posted in Mac OS X on by .

About Mike

Mike enjoys computers and technology, playing the piano, selling stuff on eBay, playing video games, cooking, and eating at Teddy's Pizza. He started CompuNoodle in 2009 and loves to hear from his readers.

3 thoughts on “OS X Lion Clean Install

  1. Mike Steben Post author

    To boot from your Mac’s optical drive, insert the DVD, restart your Mac and press and hold the C key. The OS X Lion installer will walk you through the rest of the installation.

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