Windows 8.1 is an update to Windows 8, in the same way that service packs were updates to previous versions of Windows, such as Windows 7. This major update is completely free for all Windows 8 owners.
Upgrade Windows 8.1 to Windows 10 for free
Let's start this tutorial with some preliminary steps that you may not see on Microsoft or other websites.
Below is an ordered list of tasks that you should consider performing before starting the update process. These suggestions are based on years of experience troubleshooting various issues that you see during software installations, Windows updates, and service pack installations, all of which are very similar to this Windows 8.1 update.
Once you have completed all the preparatory work, it is time to move on to Step 1 to start the upgrade to Windows 8.1.