How to upgrade windows 8 to 8.1

First of all the up-gradation of windows 8 to windows 8.1 is totally free of cost, Here is a tutorial on How to upgrade windows 8 to 8.1 through Windows Store with screen shots.


1:  Make a backup of your files.

2:  Make sure that you don't have something important in C Drive.

3:  Go to the Start screen, and tap or click the store icon

4:  In the Store, tap or click the Windows 8.1 or Windows RT 8.1 update.

5:  Tap or click Download.

6:  The update will download and install in the background while you use your PC to do other things. The installer will check to make sure you have enough disk space, that your apps and devices will work with Windows 8.1 or Windows RT 8.1, and that you have all the required updates.

In some cases, the installer might find something you need to take care of before you can continue installing the update. If so, you'll see a message telling you what you need to do.

Note

• If the installation is interrupted for any reason, you can restart the update from where you left off by going back to the Store and downloading the update again.

7:  Restart

After the update is downloaded and the first phase of the installation is complete (which could take between 15 minutes and a few hours, depending on your system and your connection speed), you'll see a message telling you that your PC needs to restart. It will give you 15 minutes to finish what you’re working on, save your work, and close your apps, and then it will restart your PC for you. Or you can restart it yourself.

Important

• If you leave your PC before it's ready to restart, be sure to save your work and close any desktop apps you're using to make sure you don't lose anything when it restarts automatically. Your PC might need to restart more than once, depending on how it’s set up, and whether additional updates are needed.
• Restarting will take longer than usual—from 20 minutes to about an hour—while the update is applied. During this time, you won't be able to use your PC.

8:  Choose your settings

License terms

After your PC finishes restarting, you'll be presented with the Microsoft software license terms. Review the terms, and then tap or click I accept to continue. If you don't accept the terms, this cancels the installation of Windows 8.1 or Windows RT 8.1, and your PC will roll back to Windows 8 or Windows RT.

Express settings

You'll see a list of recommended settings, called express settings. To accept these settings and continue, tap or click Use express settings. You can change any of these settings later, after you finish setting up. If you'd like to change some of these settings now, tap or click Customize.

For more info, tap or click Learn more about express settings. To learn about how these settings affect your privacy, tap or click Privacy statement.

Congrats your OS has successfully been updated to windows 8.1 from windows 8.

After this there will be a sign in page

9:  Welcome to the new Windows

The new Start screen will appear.