How to create partition on windows 7 without data lose screenshot

Method 1 - Click "Start"  "Run" and type "diskmgmt.msc" in the Open: line and click OK. The Disk Management snap-in will open.

Method 2- Go to "my computer" wright click mange

Click "Disk management" option

Go to Drive c:

wright click Drive c: and click "shrink volume"

select the MB which you need and Go to the drive
option and select the volume name and now finish.