How to book and upgrade Windows 10 in Win8.1

1. In desktop mode, right-click start in the lower left corner ].



2. Select control panel ].



3. Click system and security ].



4. Click [Windows update ].



5. Click [Check for Updates] to update Windows to the latest status. Wait for Microsoft to push the reservation. (Skip the preceding steps if you have received the push from Microsoft)



6. When you have received the push from Microsoft, click the Windows icon on the taskbar.



7. Select [book a free upgrade version ].



8. When the prompt "& ldquo;" is displayed, your upgraded version has been reserved! & Rdquo.