Mac OS X Mountain Lion (version 10.8) is the nineth major release of Mac OS X (now named macOS), Apple’s desktop and server operating system for Macintosh computers. OS X Mountain Lion brings a lot of great things from iPhone, iPad, and iPod touch to the Mac. You can send iMessages. Get your Mac in on Game Center. Receive notifications. Download Mac OS X Mountain Lion 10.8.5 Free Mac Os X Download Iso Click on the below link to download the latest version offline DMG image installer of Mac OS X Mountain Lion 10.8.5 for MacBook Pro, MacBook Air, MacBook Mini, and iMac.

Apple announced a developer preview of OS X 10.8 Mountain Lion (Mac App Store link) in mid-February 2012, and it became available on July 25, 2012. As expected, it makes Macs even more iOS-like, continuing the trend begun with OS X 10.7 Lion in July 2011.

Features ported over from iOS include AirPlay Mirroring, Game Center, Messages, Notes, Notification Center, Reminders, and Twitter integration. New features include Gatekeeper and Share Sheets. Gatekeeper can restrict Mountain Lion Macs to running only apps from the Mac App Store. Share Sheets is designed to make it easier for you to share links, photos, and videos by sending links in Safari, emailing or messaging from Notes, posting photos to Flikr and videos to Vimeo, and “tweeting just about anything.”

As with Lion, Mountain Lion will only available by purchase and download from the Mac App Store, where it retails for US$19.99.

Mountain Lion is susceptible to the “goto fail” bug. See Apple and the ‘goto fail’ Bug for information on securing it.

Apple has really raised the bar on hardware requirments. Where Lion had only left Core Dou Macs behind – all of them introduced in 2006 – Mountain Lion is abandoning Core 2 Duo Macs that use Intel GMA 950 or GMA 3100 graphics. Some of those were introduced in Late 2006, but some were not discontinued until Mid 2009, which means they were barely three years old when Mountain Lion was released.

Models supported by Lion but not Mountain Lion include:

• Late 2006 17″ 1.83 GHz Core 2 Duo iMac, disc. 8/7/07
• Mid 2007 Mac mini, disc. 3/3/09
• Late 2008 MacBook White, disc. 1/20/09
• Early 2008 MacBook Air, disc. 10/14/08

Oldest Macs supported by OS X 10.8 by release date:

Mountain Lion Links

• First Impressions of OS X 10.8 Mountain Lion, Simon Royal, Tech Spectrum, 2012.07.26. Installation took 45 minutes, all apps that ran in Lion run well, and everything seems a little faster.
• The Rapid Rise of OS X Mountain Lion, Dan Knight, Mac Musings, 2012.08.01. In just a few days, Mountain Lion passed Snow Leopard on its way to displacing Lion as the king of the OS X jungle.

Downloadable Updates

Standalone Updates let you update to a newer version of Mac OS X from your hard drive instead of using Software Update, which requires an Internet connection. Download the one(s) you need and install them after mounting the disk image and launching the Installer program.

There are two types of Standalone Updates: Individual (or Delta) and Combo.

• Individual Updates update one version of Mac OS X to the next version. For example, the Mac OS X 10.8.4 Update updates Mac OS X 10.8.3 to version 10.8.4. Individual Updates are also known as Delta Updates.
• Combo Updates update the base version of a Mac OS X release to the version specified in the Combo Update, including all intermediate updates. For example, the Mac OS X 10.8.4 Combo Update updates any earlier version of Mac OS X 10.8 to Mac OS X 10.8.4 using a single installer, as opposed to installing the individual Mac OS X 10.8.1, 10.8.2, 10.8.3, and 10.8.4 updates.

Standalone Updates are generally available 24 to 48 hours after the Update is available through Software Update.

If you burn a Standalone Update to CD, its disk image must be copied to your desktop or another location on your Mac OS X startup disk in order to be installed.

OS X 10.8.1

OS X 10.8.2

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So, you’ve decided to download an older version of Mac OS X. There are many reasons that could point you to this radical decision. To begin with, some of your apps may not be working properly (or simply crash) on newer operating systems. Also, you may have noticed your Mac’s performance went down right after the last update. Finally, if you want to run a parallel copy of Mac OS X on a virtual machine, you too will need a working installation file of an older Mac OS X. Further down we’ll explain where to get one and what problems you may face down the road.

A list of all Mac OS X versions

We’ll be repeatedly referring to these Apple OS versions below, so it’s good to know the basic macOS timeline.

STEP 1. Prepare your Mac for installation

Given your Mac isn’t new and is filled with data, you will probably need enough free space on your Mac. This includes not just space for the OS itself but also space for other applications and your user data. One more argument is that the free space on your disk translates into virtual memory so your apps have “fuel” to operate on. The chart below tells you how much free space is needed.

Note, that it is recommended that you install OS on a clean drive. Next, you will need enough disk space available, for example, to create Recovery Partition. Here are some ideas to free up space on your drive:

• Uninstall large unused apps
• Empty Trash Bin and Downloads
• Locate the biggest files on your computer:

Go to Finder > All My Files > Arrange by size
Then you can move your space hoggers onto an external drive or a cloud storage.
If you aren’t comfortable with cleaning the Mac manually, there are some nice automatic “room cleaners”. Our favorite is CleanMyMac as it’s most simple to use of all. It deletes system junk, old broken apps, and the rest of hidden junk on your drive.

Download CleanMyMac for OS 10.4 - 10.8 (free version)

Download CleanMyMac for OS 10.9 (free version)

Download CleanMyMac for OS 10.10 - 10.14 (free version)

STEP 2. Get a copy of Mac OS X download

10.8 Mountain Lion Download Free

Normally, it is assumed that updating OS is a one-way road. That’s why going back to a past Apple OS version is problematic. The main challenge is to download the OS installation file itself, because your Mac may already be running a newer version. If you succeed in downloading the OS installation, your next step is to create a bootable USB or DVD and then reinstall the OS on your computer.

How to download older Mac OS X versions via the App Store

If you once had purchased an old version of Mac OS X from the App Store, open it and go to the Purchased tab. There you’ll find all the installers you can download. However, it doesn’t always work that way. The purchased section lists only those operating systems that you had downloaded in the past. But here is the path to check it:

1. Click the App Store icon.
2. Click Purchases in the top menu.
3. Scroll down to find the preferred OS X version.
4. Click Download.

This method allows you to download Mavericks and Yosemite by logging with your Apple ID — only if you previously downloaded them from the Mac App Store.

Without App Store: Download Mac OS version as Apple Developer

If you are signed with an Apple Developer account, you can get access to products that are no longer listed on the App Store. If you desperately need a lower OS X version build, consider creating a new Developer account among other options. The membership cost is $99/year and provides a bunch of perks unavailable to ordinary users.

Nevertheless, keep in mind that if you visit developer.apple.com/downloads, you can only find 10.3-10.6 OS X operating systems there. Newer versions are not available because starting Mac OS X Snow Leopard 10.7, the App Store has become the only source of updating Apple OS versions.

Purchase an older version of Mac operating system

You can purchase a boxed or email version of past Mac OS X directly from Apple. Both will cost you around $20. For the reason of being rather antiquated, Snow Leopard and earlier Apple versions can only be installed from DVD.

Buy a boxed edition of Snow Leopard 10.6
Get an email copy of Lion 10.7
Get an email copy of Mountain Lion 10.8

The email edition comes with a special download code you can use for the Mac App Store. Note, that to install the Lion or Mountain Lion, your Mac needs to be running Snow Leopard so you can install the newer OS on top of it.

How to get macOS El Capitan download

If you are wondering if you can run El Capitan on an older Mac, rejoice as it’s possible too. But before your Mac can run El Capitan it has to be updated to OS X 10.6.8. So, here are main steps you should take:

1. Install Snow Leopard from install DVD.
2. Update to 10.6.8 using Software Update.
3. Download El Capitan here.

“I can’t download an old version of Mac OS X”

If you have a newer Mac, there is no physical option to install Mac OS versions older than your current Mac model. For instance, if your MacBook was released in 2014, don’t expect it to run any OS released prior of that time, because older Apple OS versions simply do not include hardware drivers for your Mac.

But as it often happens, workarounds are possible. There is still a chance to download the installation file if you have an access to a Mac (or virtual machine) running that operating system. For example, to get an installer for Lion, you may ask a friend who has Lion-operated Mac or, once again, set up a virtual machine running Lion. Then you will need to prepare an external drive to download the installation file using OS X Utilities.

After you’ve completed the download, the installer should launch automatically, but you can click Cancel and copy the file you need. Below is the detailed instruction how to do it.

STEP 3. Install older OS X onto an external drive

The following method allows you to download Mac OS X Lion, Mountain Lion, and Mavericks.

1. Start your Mac holding down Command + R.
2. Prepare a clean external drive (at least 10 GB of storage).
3. Within OS X Utilities, choose Reinstall OS X.
4. Select external drive as a source.
5. Enter your Apple ID.

Now the OS should start downloading automatically onto the external drive. After the download is complete, your Mac will prompt you to do a restart, but at this point, you should completely shut it down. Now that the installation file is “captured” onto your external drive, you can reinstall the OS, this time running the file on your Mac.

1. Boot your Mac from your standard drive.
2. Connect the external drive.
3. Go to external drive > OS X Install Data.

Locate InstallESD.dmg disk image file — this is the file you need to reinstall Lion OS X. The same steps are valid for Mountain Lion and Mavericks.

How to downgrade a Mac running later macOS versions

If your Mac runs macOS Sierra 10.12 or macOS High Sierra 10.13, it is possible to revert it to the previous system if you are not satisfied with the experience. You can do it either with Time Machine or by creating a bootable USB or external drive.
Instruction to downgrade from macOS Sierra

Instruction to downgrade from macOS High Sierra

Instruction to downgrade from macOS Mojave

Mac Os X Mountain Lion Download Link Software

Instruction to downgrade from macOS Catalina

Mac Os X Mountain Lion Download Link Download

Before you do it, the best advice is to back your Mac up so your most important files stay intact. In addition to that, it makes sense to clean up your Mac from old system junk files and application leftovers. The easiest way to do it is to run CleanMyMac X on your machine (download it for free here).

Apple Os Mountain Lion Download

Visit your local Apple Store to download older OS X version

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If none of the options to get older OS X worked, pay a visit to nearest local Apple Store. They should have image installations going back to OS Leopard and earlier. You can also ask their assistance to create a bootable USB drive with the installation file. So here you are. We hope this article has helped you to download an old version of Mac OS X. Below are a few more links you may find interesting.