Windows 7: HELP ! Deleted Second OS .

I am using dualboot of Windows 7 and win8 .
and I accidentally deleted my second operating system which is windows 8 in msconfig .
now my PC is automatically booting to windows 7 without any choices to choose from .
but my win8 partition is still alive .
Can someone help me recover my second os boot in msconfig which I accidentally deleted ?

or should I reinstall my second os ?
I dont want to waste my time reinstalling again so please HELP me !

Welcome to EasyBCD 2.0! | The NeoSmart Files

You can use this program to add an entry for Windows 8 to the Windows 7 bootloader.

9. On the left side of EasyBCD, click on the Add New Entry button. (See screenshot below)

A) In the top section under Operating Systems, click on the Windows tab. (See screenshot below)

B) To the right of Type, select Windows 8 from the drop down menu. (See screenshot below)
WARNING: Be sure to leave the Automatically detect correct drive box checked.

D) Click on the Add Entry button. (See screenshot below) Note: The screenshot shows Windows XP, but you will want to have Windows 8 showing.

This is a portion of a tutorial written by Brink Here: Dual Boot Installation with Windows 7 and XP