Step 1: The first and the most important thing for you is to have your own original copy of the new OS X 10.8 Mountain Lion.

Step 4: Finally mount the 'InstallESD.dmg' file onto your Mac Desktop by double clicking it. Step 3: Now you have to go to the directory, Contents> SharedSupport and find a file named as 'InstallESD.dmg'. Step 2: Now once the download is completed, go to applications> directory and select the 'Show Package contents' option, which pops out while right clicking on 'Install Mac OS X Mountain Lion.app'. Step 1: Go to the App store and download the OS X Mountain Lion 10.8. Recheck the article twice before performing your installation process, in order to ensure complete successful installation without any interfere in between. Apple also used to have OS X 10.6 Snow Leopard available for a fee, but it is no longer purchasable.While following the guide below, you will need to format and erase your Mac disk and all the data on it, in order to perform a clean install of the new OS X 10.8 Mountain Lion.īefore going further into the installation process, I would strictly recommend you to backup your Mac in order to save your important files, data and settings from being lost.įollowing few steps are the important steps in this guide for you to perform a clean install of the new OS X 10.8 Mountain Lion on to your Mac Device. Mavericks was free to download, and Apple has not charged for Mac software since then outside of the legacy Lion and Mountain Lion updates. Apple began making Mac updates free with the launch of OS X 10.9 Mavericks, which also marked the shift from big cat names to California landmark names. The $19.99 fee dates back to when Apple used to charge for Mac updates. Macs that shipped with Mac OS X Mavericks or later are not compatible with the installer, however. MacBook (Late 2008 Aluminum, or Early 2009 or newer).

Mac OS X Mountain Lion is compatible with the following Macs: Mac OS X Lion is compatible with Macs that have an Intel Core 2 Duo, Core i3, Core i5, Core i7, or Xeon processor, a minimum of 2GB RAM, and 7GB storage space. Apple recently dropped the $19.99 fee for OS X Lion and Mountain Lion, making the older Mac updates free to download, reports Macworld.Īpple has kept OS X 10.7 Lion and OS X 10.8 Mountain Lion available for customers who have machines limited to the older software, but until recently, Apple was charging $19.99 to get download codes for the updates.Īs of last week, these updates no longer require a fee, and can be downloaded from the OS X Lion and OS X Mountain Lion support documents on Apple's website.

Mac os 10.8 dmg