Easy way to partition the disk in Windows 7

Today i am going to tell how to partition the disk in windows 7.first start the computer.In the desktop. Right click My Computer->manage->device management the screen look like this

In that device management there are several drive in that c drive right click->shrink volume click the shrink volume the dialog box appear like this

 

In that queing space they required some space in the disk if u want to  changed the disk space we can change and able to allocated the space in the disk.