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Keep a backup of the download mountain lion failed within if you still need them, then come back to this section.

A clean install will give you peace of mind. With that cleared up, in this article we will show you how to erase existing data and reinstall a brand new copy of Mountain Lion. Here is a breakdown of the steps download mountain lion failed. How to Clean Install OS X Mavericks. First, grab hold of a copy of the Mountain Lion installer file. Look for OS X Mountain Lionhold down the Option key and click Download. Re-enter your App Store credentials if required. Note that this may take up between 10 and 60 minutes, depending on your Internet connection speeds.

While you wait, get a coffee, download mountain lion failed break and a USB drive with at least 8 GB capacity. When you get back, we will look at how you can create a bootable copy of OS X Mountain Lion on your USB drive.

Do this with caution as there will be no way for recovery from this point onwards. This time, select Reinstall OS Xthe second option from the list. Reproduction of materials found on this site, in any form, without explicit permission is prohibited. It looks like your email address is not complete. Please enable JavaScript in your browser to download mountain lion failed a better experience. How to Clean Install Mac OS X Mountain Lion Published by Hongkiat Limin Desktop.

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Unfortunately in Mac the process can be a little more complicated and less well known. But first, why should you clean install the Mac OS X Mountain Lion at all? Here are couple of reasons we can think of: One, your existing Mac OS X inherited documents, files and applications that take up a lot of unnecessary storage space.

Do not start the installation process when your download finishes. Our goal is here to keep a soft copy of the installer and in the flash drive. This may take a minute or two. Plug in the flash drive into download mountain lion failed Mac and launch the Disk Utility application. You can do it quickly by searching via Spotlight. This will remove everything in the flash drive.

Once the flash drive is formatted, re-select the formatted USB drive from the left menu, and click the Restore tab. Next, we are going to create a bootable OS X Mountain Lion in the flash drive. Do the following steps carefully:. Then, select the Mac OS X on the right. Click the Erase button button and everything including files, applications, settings, etc in your Mac will be completely deleted.

To optimize your Mac, it is quite necessary to reinstall and start from a clean slate. Two, you are thinking about trading or gifting your machine to someone else, but you are concerned with the remnants of files, profiles and various credentials that if mishandled, may lead to a security leak.