Windows 10 is now rolling out to millions of users around the world, in fact, our early report shows that over 67 million computers have been upgraded in the first three days. Now, if you are an advanced user or if you have been running an installation of Windows for quite some time, you probably want to perform a clean install of the new operating system.
A clean installation of the operating system, in this case, Windows 10, involves formatting the hard drive. This process will delete everything on your computer, so basically you’ll be starting from scratch.
This process also means that you will have to restore your personal files from a backup, and you’ll have to reinstall all your applications.
Continue reading: How to do a clean installation of Windows 10 | Windows Central