If you want to create a new partition / disk volume in Windows 7, you can use the built-in disk management tools to do that. Here’s how.
Creating A New Partition

Using Disk Management Instructions

(1) Right click on Computer in Start Menu, and click on Manage (with the Administrative Tools icon). Then close the Control Panel window.

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click on the Administrative Tools

(2) Click on Computer Management in Administrative Tools, Uncollapse Storage, then click on Disk Management

Computer Management

(3) You will first need to shrink a partition or volume from the free space on a disk to create unallocated space on that disk.

You can then use the unallocated disk space to create the new partition or volume.

create unallocated space

(4) In the middle pane, right click on the empty unallocated partition or volume and click on New Simple Volume.

(5) Click on the Next button.

click on New Simple Volume

(6) Type in how much disk space in MB (1 GB = 1024 MB) you want to use from the unallocated partition to create the new partition with, then click on the Next button.

Click on the Next button

(7) Assign a drive letter for the new partition

Type in how many MB (1 GB = 1024 MB)

(8) Type in a volume label name that you want for the new partition, check the Perform a quick format box, and click on the Next button.

Type in a volume label name

 

Click on the Next button

Click on the Next button and you’re done! You have successfully created a new partition in Windows 7.