Locate the installation of Mountain Lion image
You must create a bootable copy of the installer before you install Mountain Lion, because the setup process will delete the files you need to create a bootable copy of the installer. This file is called Install OS X Mountain Lion. It is saved in the Applications folder on the Mac. You can also use a USB flash drive with at least 5GB capacity (8GB and 16GB are available sizes) as a bootable medium.ĭownload a copy of OS X Mountain Lion that you must purchase at Apple Store online and download it from the Mac App Store. If your Mac doesn't have an integrated SuperDrive, use an external DVD burning tool. DVD dual layer is available wherever standard DVDs are sold. The OS X Mountain Lion installer is just too big a thing to match the standard DVD. DVD dual layer has two layers, increasing the available recording space to about 8.5GB. You need a dual layer DVD (DVD with double sided recording) and a disc or USB drive.
Locate the installation of Mountain Lion image.How to create OS X Mountain Lion installer on DVD or USB