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Aug 11, 2012

How to Create a Bootable, Backup Mountain Lion Install Disk

Unlike the older versions of Apple’s Operating System, Mountain Lion didn’t roll out in a compact disk format. The installer comes in the form of an app, which can be downloaded from the Mac App Store. But, if you really want your installer in a bootable form, you can create a bootable Mountain Lion installer in a hard drive or a flash drive.

There may arise many situations, when you need to install the Mountain Lion in multiple Mac; thus, downloading the installer or copying them in every system may become a tedious task. So, the best solution for this is to create a bootable version of Mountain Lion on a thumb drive. Also, whenever the system faces any technical issue, it can be easily resolved with the help of this thumb drive.

Here is a simple way to create a bootable Mountain Lion installer. But before that, let’s look at some of the advantages of creating an installer on a flash drive or a hard drive:

- As you know, many Macs do not have a built-in optical drive; hence creating a disk based bootable installer will be useless.

- Secondly, whenever there is an OS update, it can be easily updated in the thumb drive, which is quite difficult on a disk.

You can create a bootable installer using any of the two ways; with the help of the disk utility or with the help of a third party application.

Important: Make sure that you move the Mountain Lion installer from the Applications folder to any other drive because the installer is self destructive in nature and deletes itself from the folder once the installation is complete.

Utilizing Disk Utility:

1. Locate your installer which reads OSX Mountain Lion.app. Right click on the icon and select show package contents.

2. From the appearing folder, open Contents -> Shared Support and then select the image file titled “InstallESD.img”.

3. Open Disk Utility and move the image file to the empty area of the disk utility box.

4. From the sidebar, select the image file and mount the image by clicking on the Open button. The mounted file should read as ‘Mac OS X Install ESD’ and the disk utility should read as "InstallESD.img".

5. Select the mounted image file and click on restore to the main by right clicking on it.

6. Attach a formatted and a well supported (probably 8 GB) flash drive or hard drive to the system.

7. In the Disk Utility window, bring the destination drive to the destination field on the right pane.

8. Select Restore. Depending upon the speed of your drive the process will take a while and once done, eject the drive. There you have it, a bootable Mountain Lion Installer.

Apart from this method, you can even create a bootable installer with the help of several third party applications like Lion Diskmaker or Carbon Copy Cloner. So, I guess all Mac fans now finally have a stick in their hands (USB stick) to tame their Mountain Lion.
This is a guest post by Jena Branch of Buycox.com, a site that offers savings and current information on cox communications.

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