There is no download link we can provide. Only the Apple Store can provide a download link for Mountain Lion. But I'm a bit perplexed. Mountain Lion is not and never has been available on a physical disk. Are you sure you didn't actually inadvertently order Snow Leopard? Or that they said that they'll send you the redemption code for Mountain. MacOS High Sierra 10.13 can upgrade Sierra, El Capitan, Yosemite, Mavericks or Mountain Lion. Safari will download the following older installers as a disk image named InstallOS.dmg or InstallMacOSX.dmg. Open the disk image, then open the.pkg installer inside the disk image. It will install an app named Install Version Name. Download MacPostFactor (formerly MLPostFactor) - An easy to use installer application that enables you to effortlessly deploy the Mountain LionMountain Lion, Mavericks or Yosemite operating system on unsupported Macs. 10 Download OS X Mountain Lion 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.

63,241 downloadsUpdated: September 25, 2016Donationware

An easy to use installer application that enables you to effortlessly deploy the Mountain LionMountain Lion, Mavericks or Yosemite operating system on unsupported Macs.

IMPORTANT NOTICE

What's new in MacPostFactor (formerly MLPostFactor) 2.0.1:

  • A minor 'bug-fix' update to MacPostFactor v2.0.
  • Fixes adfly URL issues
  • Improves some error messages (makes them more explicit)
  • Fixes some minor UI issues/glitches
Read the full changelog

MacPostFactor (formerly known as MLPostFactor) is a simple macOS app designed to help you bypass macOS' hardware limitations and install Mountain Lion, Mavericks or Yosemite on devices that are NOT officially supported.

If you need to install macOS Sierra or macOS High Sierra on an unsupported computer, you need to use the macOS High Sierra Patcher tool.

MacPostFactor will prove to be useful if you are using an older Mac model, but you still want to take advantage of the capabilities provided by Apple's latest operating system releases.

However, keep in mind that the MacPostFactor application still has its own requirements, such as the presence of a copy of OS X Mountain Lion, Mavericks or Yosemite in the Applications folder (must be available as an .app file), and 2GB of RAM. In addition, the installation procedure requires your attention and you will perform it at your own risk.

Carefully follow the installation instructions to deploy macOS on older Macs

To start the installation process you first have make sure that you have MacPostFactor and the macOS installer app in the Application folder. Next, you have to launch MacPostFactor, accept the EULA and then choose where you want to install OS X and what flavor of it you want to install on your older Mac.

It is important to understand that with the help of MacPostFactor you can install OS X Mountain Lion on MacBook2,x, MacBook3,x, MacBook4,x, MacBookPro2,x, MacBookAir1,1, MacMini1,x (C2D upgraded), MacMini2,x, iMac4,x (C2D upgraded), or iMac5,x Macs.

Furthermore, MacPostFactor also helps you install OS X Yosemite and Mavericks only on Macs with upgraded graphics such as the Mac Pro and Xserve.

After you click the Install button, you have to wait until the process ends and then reboot the Mac to complete the installation.

Simple to use wizard tool designed to help you install the latest macOS releases on unsupported Macs

MacPostFactor is a free and powerful macOS app which proposes a solution for people that own older Macs that are not supported by Apple's Mountain Lion, Mavericks or Yosemite operating systems.

However, as long as your Mac meets MacPostFactor's requirements, you can effortlessly install the Mountain Lion, Mavericks or Yosemite OS X releases, but you still have to keep in mind that you are performing the installation at your own risk.

Filed under

MacPostFactor (formerly MLPostFactor) was reviewed by Sergiu Gatlan
4.5/5
SYSTEM REQUIREMENTS
  • A copy of Mountain Lion, Mavericks or Yosemite in the Applications folder (MUST BE AN .APP FILE)
  • OS X Mountain Lion can be installed on MacBook2,x, MacBook3,x, MacBook4,x, MacBookPro2,x, MacBookAir1,1, MacMini1,x (C2D upgraded), MacMini2,x, iMac4,x (C2D upgraded), or iMac5,x.
  • OS X Yosemite and Mavericks can only be installed on Macs with upgraded graphics such as Mac Pro and Xserve
  • 15 GB of available HDD space
  • At least 2 GB of RAM
  • 64-bit processor
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MacPostFactor (formerly MLPostFactor) 2.0.1

add to watchlistsend us an update
runs on:
Mac OS X 10.7 or later (Intel only)
file size:
333.6 MB
filename:
MacPostFactor 2.0.1 Release.dmg
main category:
System Utilities
developer:
visit homepage

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To get the latest features and maintain the security, stability, compatibility, and performance of your Mac, it's important to keep your software up to date. Apple recommends that you always use the latest macOS that is compatible with your Mac.

Learn how to upgrade to macOS Big Sur, the latest version of macOS.

Check compatibility

The version of macOS that came with your Mac is the earliest version it can use. For example, if your Mac came with macOS Big Sur, it will not accept installation of macOS Catalina or earlier.

If a macOS can't be used on your Mac, the App Store or installer will let you know. For example, it might say that it's not compatible with this device or is too old to be opened on this version of macOS. To confirm compatibility before downloading, check the minimum hardware requirements:

  • macOS Catalina 10.15 hardware requirements
  • macOS Mojave 10.14 hardware requirements
  • macOS High Sierra 10.13 hardware requirements
  • macOS Sierra 10.12 hardware requirements
  • OS X El Capitan 10.11 hardware requirements
  • OS X Yosemite 10.10 hardware requirements

Download macOS using Safari on your Mac

Safari uses these links to find the old installers in the App Store. After downloading from the App Store, the installer opens automatically.

  • macOS Catalina 10.15 can upgrade Mojave, High Sierra, Sierra, El Capitan, Yosemite, Mavericks
  • macOS Mojave 10.14 can upgrade High Sierra, Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion
  • macOS High Sierra 10.13 can upgrade Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion
Mountain lion download app store

Safari downloads the following older installers as a disk image named InstallOS.dmg or InstallMacOSX.dmg. Open the disk image, then open the .pkg installer inside the disk image. It installs an app named Install [Version Name]. Open that app from your Applications folder to begin installing the operating system.

  • macOS Sierra 10.12 can upgrade El Capitan, Yosemite, Mavericks, Mountain Lion, or Lion
  • OS X El Capitan 10.11 can upgrade Yosemite, Mavericks, Mountain Lion, Lion, or Snow Leopard
  • OS X Yosemite 10.10can upgrade Mavericks, Mountain Lion, Lion, or Snow Leopard