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Create a Bootable Version of the OS X Mavericks Installer on a USB Flash Drive

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Finding the OS X Mavericks Installer Image
Finding the OS X Mavericks Installer Image

Right-click or control-click the Install OS X Mavericks file and select Show Package Contents from the pop-up menu.

Courtesy of Coyote Moon, Inc.

In order to create a bootable copy of the OS X Mavericks installer, you must locate the InstallESD.dmg file that's hidden in the OS X Mavericks installer you downloaded. This image file contains a bootable system and the files necessary to install OS X Mavericks.

Since the installer image file is contained within the OS X Mavericks installer app, we must first extract the file and copy it to the Desktop, where we can then easily make use of it.

  1. Open a Finder window and navigate to your Applications folder.

  2. Look through your list of applications and locate the one named Install OS X Mavericks.

  3. Right-click or control-click the Install OS X Mavericks file and select Show Package Contents from the pop-up menu.

  4. The Finder window will display the contents of the Install OS X Mavericks file.

  5. Open the Contents folder.

  6. Open the SharedSupport folder.

  7. Right-click or control-click the InstallESD.dmg file, and then select Copy "InstallESD.dmg" from the pop-up menu.

  8. Close the Finder window, and return to your Mac's Desktop.

  9. Right-click or control-click on an empty area of the Desktop and select Paste Item from the pop-up menu.

  10. The InstallESD.dmg file will be copied to your Desktop. This can take a bit of time, because the file is around 5.3 GB in size.

When the process is finished, you'll find a copy of the InstallESD.dmg file on your Desktop. We'll use this file in the next series of steps.

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