Install Mac Os X Mountain Lion App
Inside, you should see the following: Install OS X Mountain Lion.app. This is the Mountain Lion installation app that was downloaded from the Mac App Store. Right click on the app, and select Show Package Contents. Top paid mac apps. Step 4: Open the Contents folder, followed by the Shared Support folder, and locate InstallESD.dmg. After downloading the Mountain Lion.App from the store aka “Install Mac OS X Mountain Lion”, find it in the /Applications directory, control click it to bring up a contextual menu and select “Show Package Contents” from the menu. First, make sure your USB drive is formatted for use with a Mac, then download the OS X Lion installer from the App Store and copy it to your flash drive. Finally, use your bootable flash drive to install Lion on your Mac. Make Sure Your USB Drive Is Formatted for a Mac Not all USB drives can be used with a Mac right out of the box. Official OS X Mountain Lion.app Installer from the Mac App Store. Both versions 10.8.4 AND 10.8.5 full installers included (zipped). Un-archive the zip archive and you will get the app Installer. A bootable ISO or bootable USB can be made directly from the InstallESD.dmg disk image found under Contents/SharedSupport/. Access to a Mac to download OS X Mountain Lion from App Store and prepare UniBeast USB Drive. A minimum of 8GB or larger USB flash drive. A PC capable of running OS X Mountain Lion. Step 1: First and foremost, this process requires that you own a copy of Mac OS X Mountain Lion (10.8) and a USB drive with a minimum capacity of 8GB.
- Apple Mac Os X Mountain Lion 10.8 Install Disc
- Install Mac Os X Mountain Lion App Download
- Install Mac Os X Mountain Lion Approach
- Install Mac Os X Mountain Lion Apps
- Install Mac Os X Mountain Lion App Store
Mountain Lion is the latest OS X which is available to purchase and has access to download from the App Store. Mountain Lion is available in the format of digital download in the Mac App Store and not available on a disc. The installer size measures approximately 4.05 GB and can easily create a bootable USB installer drive for Mountain Lion. There are several Macs from which users can install at no additional charges. But, if you have never upgraded your Mac or any older version of Mountain Lion you still have the option to purchase the license for Mountain Lion as Apple lets you purchase Lion OS X 10.7, Snow Leopard OS X 10.6, and Mountain Lion (OS X 10.8).
With quite 65 million users—consumers, scientists, animators, developers, system administrators, and more—OS X is the most generally used UNIX® desktop operating system. Tight integration with hardware—from the sleek MacBook Air to the powerful Mac Pro—makes OS X the platform of choice for an emerging generation of power users.
The OS X kernel is predicated on FreeBSD and Mach 3.0 and features an extensible architecture supported well-defined kernel programming interfaces (KPIs). OS X was the primary OS to ship as one install that would boot into either a 32-bit or 64-bit kernel, either of which could run 32-bit and 64-bit applications at the full native performance. Starting with a cougar, OS X exclusively uses a 64-bit kernel, but it continues to run both 32-bit and 64-bit applications.
After the user receives a license, the user gets a notification of redemption code from Apple.
Mountain Lion OS X 10.8 is one of the greatest operating systems from Apple. This version supports video conversion applications and runs at a rapid pace compared to others.
The user can run the installer from the older version or upgrade it too. But there are different kinds of reasons users might require to create a bootable installer.
Following is the list to how to create a bootable USB installer drive for Mountain Lion:
The user copy of Mountain Lion is installed on as many Macs you want at no additional cost. To install multiple Macs, a bootable USB installer is more scalable as compared to downloading on every individual computer. The user can also make your own bootable USB installer disk before any upgrades. If the user’s Mac is damaged or has any corrupt errors in the operating system. Moreover, it doesn’t allow you to boot then the user will never get a faster internet connection.
To create a bootable Mountain Lion USB installer disk, the user is required to get a copy of the installation file of Mountain Lion. If a user’s Mac runs on a previous version, the user can download it from the app store. Else, if a user has never experienced downloading then it needs to be purchased the license code for Mountain Lion and redeem it. Moreover, the user can also borrow from friends or colleagues to create the same file.
Make the OS X cougar Install Drive
- Launch Disk Utility and connect a USB drive to the Mac
- Select the USB drive from the left menu and click on on “Erase” tab, choose “Mac OS X Extended (Journaled)” because the format, then click on the “Erase” button within the corner
- Now select the formatted USB drive from the left side and click on on the “Restore” tab
- Drag the previously mounted “Mac OS X Install ESD” image into the “Source” section
- Drag the formatted partition to the “Destination” section, then click on “Restore”
Confirm that the USB drive will lose its data and enter the Admin password when asked
Disk Utility will now create a bootable OS X cougar installer drive out of USB drive using the disk image, this will take a touch while counting on how briskly the drive and Mac are but 20-30 minutes isn’t unusual.
How to Clean Install Mac OS X Mountain Lion 10.8 using USB
You can clean install Mac OS X Mountain Lion 10.8 using USB by accessing the link below. Also, make sure that you have enough back up before you proceed with the same. There are a lot of duplicate ISO images on the market and it is best to download the same from a trusted source.
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.
Cheetah 10.0 | Puma 10.1 | Jaguar 10.2 |
Panther 10.3 | Tiger 10.4 | Leopard 10.5 |
Snow Leopard 10.6 | Lion 10.7 | Mountain Lion 10.8 |
Mavericks 10.9 | Yosemite 10.10 | El Capitan 10.11 |
Sierra 10.12 | High Sierra 10.13 | Mojave 10.14 |
Catalina 10.15 |
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
Apple Mac Os X Mountain Lion 10.8 Install Disc
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:
- Click the App Store icon.
- Click Purchases in the top menu.
- Scroll down to find the preferred OS X version.
- 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.
- Start your Mac holding down Command + R.
- Prepare a clean external drive (at least 10 GB of storage).
- Within OS X Utilities, choose Reinstall OS X.
- Select external drive as a source.
- 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.
- Boot your Mac from your standard drive.
- Connect the external drive.
- 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
Install Mac Os X Mountain Lion App Download
Instruction to downgrade from macOS High Sierra
Instruction to downgrade from macOS Mojave
Instruction to downgrade from macOS Catalina
Install Mac Os X Mountain Lion Approach
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).
Install Mac Os X Mountain Lion Apps
Visit your local Apple Store to download older OS X version
Install Mac Os X Mountain Lion App Store
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.