We can, however, directly use the Windows 10 installation media to wipe C Drive clean and do the re-installation afterward, but this method has a drawback too, it command we’re about to use is disk-level, not partition-level, so if you have separated disks for OS and data, you’re good to follow along, but if there’s one disk on the computer, the command will kill all data. To ensure a clean drive for a clean system, Wipe, erase, or overwrite is the essential step we should take previously. Maybe you’ll argue that why don’t we just insert the Windows 10 installation media directly without the resetting steps in Windows 8, that’s because Delete is not Wipe, deleted files have traces left for the data recovery programs, Wipe, on the country, leaves nothing there for recovering.
Now C Drive is reset, install the Windows 10 bootable media, delete C Drive, and install Windows 10 on it, you’ll get the new operating system.
My computer is now slower than before, I want to reinstall the operating system but I want to keep my files and personal data, how can I perform such steps? The original system is Windows 8, I would like to install Windows 10 instead, I got a pro license.