A:Answer It will, but there are other options than overwriting the Operating system. You can use the upgrade option that will keep all your files, but still it will over write the operating system you currently have installed. There are other options to use if you currently have a windows 10 machine and just need to repair the operating system. Like Dism, and sfc. Also checkdisk. Depending on your needs, but all of those tools are free to use and can be googled.