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Read More: Apple Releases Free OS X Mavericks Software Update New Mac Pro Coming December, Priced From 2,999 This article was first published.

Getting Up To Date Before heading to the App Store an downloading Mavericks, you should make sure your computer and every app on it is fully up to date.

Updating the operating system without running the newest version of every application could make apps unstable or unusable after the OS has been installed.

Why advertise with us For Apples own applications, or anything installed from the App Store, updating is simple: open the App Store application, click the Updates tab, then click Update All.

Third party applications downloaded elsewhere will require more work.

Some will automatically check for updates every time you open them, so you should start by opening each app you use and see if the app suggests you update it.

If this doesnt happen, youll have to go to the developers website and check manually for any updates recently released.

Dont panic too much if you cant be sure every app is up to date however, as if its already working on Lion or Mountain Lion, then it should work in Mavericks without a problem - its just good practice to update as much as you can before installing a new operating system.

Open Apples Disk Utility application, found by clicking Spotlight in the upper-right corner and typing out the apps name.

Click on your computers hard drive on the left-hand column - itll be called Macintosh HD by default - and then click Verify System Permissions on the right-hand side.

This process could take a couple of second or several minutes depending on when it was last done, and how big the hard drive is.

If all is well, a green confirmation message will be displayed.

If a red message is displayed, the app will suggest you click Restore Disk Permissions - do so, and let the app conduct the repair.

If another red message is displayed, then a trip to your local Apple Store would be advisable.

Next, delete any applications you no longer use by dragging their icons from the Applications folder and into the bin, and its worth emptying the bin and downloads folder too of anything you no longer need.

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Remember you need to have at least 8GB of free disk space, so clearing aware unused apps and old downloads is always a good idea.

Should anything go wrong during the update - or you accidentally install Mavericks as a fresh install - you can always restore your documents, music, apps and everything else from a backup.

Attach an external hard drive - one with a capacity larger than that of the Mac itself - and the computer will ask if you want to make the drive a Time Machine backup drive.

Once set up, the Time Machine drive will appear as an icon on your desktop.

Once backed up, restart your Mac to ensure no apps or processes are running in the background, and no more updates are required.

Open the Mac App Store, search for or click on Mavericks and download it for free - or click on this link to be taken directly to the Mavericks page.

Once downloaded, simply tell the computer where you want Mavericks installed (the internal Macintosh HD, and not the external Time Machine backup drive), and the installation process will begin.

During installation, your Mac will restart at least once and the whole process will take around 15 to 20 minutes, depending on the machine youre updating.

Once complete, you can log back into your computer and Mavericks will be up and running.

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