

Here is a breakdown of the steps involved: 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. A clean install will give you peace of mind. 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. To optimize your Mac, it is quite necessary to reinstall and start from a clean slate. 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. But first, why should you clean install the Mac OS X Mountain Lion at all? Unfortunately in Mac the process can be a little more complicated and less well known. In the Windows’ analogy, this is like reformatting your Macbook or iMac and reinstalling a brand new version of Mac OS X Mountain Lion.
