Resize hard disk size without formatting.
1. Click on the windows button and right click on computer then click manage
2. In the bootom u will find disk mangement click on the disk mangement.
3.click on the drive shrink or resize option .
2 nd method..
1. Download ease us partion master .
2. install partion master . then open ease us partion master
.
3. Click on partion manager . Right click on the drives.
4. Click on resize or shrink . A box open drag or enter size then click apply .
5. Now you will find free space .now you can add to any drive like C drive or you can create new drive.