Mac os mountain lion apple store

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: It deletes system junk, old broken apps, and the rest of hidden junk on your drive.

Reinstalling Mountain Lion

Normally, it is assumed that updating OS is a one-way road. The main challenge is to download the OS installation file itself, because your Mac may already be running a newer version. The purchased section lists only those operating systems that you had downloaded in the past. But here is the path to check it:. 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.

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. Nevertheless, keep in mind that if you visit developer.

• Move up to Mountain Lion without losing your personal data..
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• Upgrading from Mac OS X 10.7 (Lion);
• STEP 1. Prepare your Mac for installation?
• ARCHIVED: How do I install OS X 10.8 (Mountain Lion)?.
• OS X Mountain Lion.
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Buy a boxed edition of Snow Leopard The email edition comes with a special download code you can use for the Mac App Store. So, here are main steps you should take:. Update to Download El Capitan here. If you have a newer Mac, there is no physical option to install Mac OS versions older than your current Mac model. 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. Below is the detailed instruction how to do it.

Mac OS X Lion - Wikipedia

Now the OS should start downloading automatically onto the external drive. Either way, this step-by-step guide will help ensure that you understand how everything works. The upgrade install process lets you install Mountain Lion over your existing version of OS X, and still retain all of your user data, most of your system preferences, and most of your applications.

You may lose some of your apps if they can't run under Mountain Lion. The installer may also change some of your preference files because certain settings are no longer supported or are incompatible with some feature of the new OS. Most of you won't have any problems with installing and using Mountain Lion, but there's a small chance that your particular combination of apps, data, and preferences will be the one that was never thoroughly tested before Mountain Lion was released.

That's one reason why I highly recommend backing up your current system before you start the upgrade process. I prefer to have a current Time Machine backup, as well as a current clone of my startup drive. That way I can revert my Mac to the way it was configured before I started the installation, should I need to, and it won't take long to do it. You may prefer a different backup method, and that's fine; the important thing is having a current backup.

If you have everything lined up, and you've ensured that you have current backups in place, let's begin the actual upgrade process. The upgrade will replace the version of OS X you're currently running but will leave your user data and most of your preferences and apps in place.

Mac OS X Lion

Before you begin the upgrade, make sure you have a current backup of all your data. While the upgrade process shouldn't cause any problems, it's always best to be prepared for the worst.

If you use multiple monitors, be sure to have all of the monitors turned on. During the installation, the progress window may display on the secondary monitor instead of your main monitor. You won't see the progress window if the display is turned off, and you may think something is going wrong with the installation. More importantly, if you can't see the progress window, you won't have any idea how long you have to wait before you can use your new OS.

Your Mac will restart automatically once the installation is complete. This is where many people get worried because the first startup with OS X Mountain Lion can take a long time. Mountain Lion analyzes your Mac's hardware, fills data caches, and performs other one-time housekeeping chores. This startup delay is a one-time event. The next time you start your Mac, it will respond as expected.

This will check for updates of the OS and many supported products, such as printers, that are connected to your Mac and may need updated software to work correctly with Mountain Lion. Share Pin Email. Tom Nelson has written hundreds of articles, tutorials, and reviews for Other World Computing and About. He is the president of Coyote Moon, Inc.

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• Bypass the Mac App Store to update Mountain Lion software?
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Updated December 17, A destination volume for the installation. Basically, any bootable device will work, but because this is a guide to an upgrade install, the target volume must be running OS X Lion or earlier.

If your Mac doesn't meet this requirement, then the Clean Install guide is a better choice for you. A minimum of 8 GB of free space; more space is better, of course. This is a hidden volume that is created during the installation. The Recovery HD volume contains utilities to repair drives and to re-install the OS if you have problems with a drive. The download process also creates a Mountain Lion installer icon in the Dock for easy access and auto-starts the Mountain Lion installer.

You can quit the installer if you're not ready to begin the installation process; otherwise, you can continue from here. Close any applications that are currently running on your Mac, including your browser and this guide. You can print the guide first by clicking the printer icon in the top right corner of the guide.