SOURCE:
http://www.cnet.com/news/how-to-reserve-your-free-copy-of-windows-10/
How can you now reserve your free copy of Windows 10?
First, you must be running Windows 7 Service Pack 1 or Windows 8.1, and you must have installed a March the Windows update dubbed KB3035583, according to blog site VentureBeat. That update will already be on your PC as long as you have Automated Updates enabled.
Peek at your Windows system tray in the lower right corner, and you should see a new icon displaying the Windows logo. Hover over it, and the popup messages says: “Get Windows 10.”
Click that icon, and up pops a window that explains how the free upgrade works. Once it’s available, Windows 10 will automatically download onto your PC. You’ll receive a notification after the download is complete so that you can choose an appropriate time to install it.
You can scroll through the various screens of the Get Windows 10 window to read more about the new OS.
When you’re done, simply click the button to reserve your free upgrade.
The reservation screen asks for your email address so you can receive the notification. Enter your email address and click the Send confirmation button. You can now close the Get Windows 10 window.
Should you change your mind and wish to cancel the reservation, just click the Get Windows 10 icon again.
Click the three horizontal lines in the upper left corner to display the menu and click the link for View confirmation.
Then click the link to Cancel reservation and click the button for Cancel reservation to confirm your choice.
Thanks. For later.
Just did it. Thanks!
bump for later
Thank you for posting this!