How To Create Partition in Windows 7 & 8 Without Formatting the system

How To Create Partition in Windows 8 Without Formatting the system 

Windows 8 Disk Management built-in "Shrink Volume" feature supports to reduce partition size and generate unallocated space. Can you redistribute the unallocated space to any partition within Windows inbuilt disk management?

How to shrink volume with Windows 8 Disk Management?

Step1: Right-click "Computer", select "Manage" and then click "Disk Management" in "Storage" folder to open Windows 8 Disk Management. Right click on the volume which you want to shrink and select "Shrink Volume" as below:

Step2: In the pop-up window, enter the amount of space to shrink. 

Then you can preview an unallocated space behind D drive. When you right click on it, you can only see "New Simple Volume" that allows you to create a new partition.

The new generated unallocated space is always on the right side of the partition in Windows 8 disk management. However, the "Extend Volume" can only extend the partition that has an unallocated space behind it. So the unallocated space which is not next to C drive can't be added to system partition.