Shrinking Disk Partition

1.If you want to shrink a disk partition simply go to Disk Management.You can do so by typing "Disk Management" in start up menu or by typing diskmgmt.msc in command prompt.

2.Right click on the partition you want to shrink and select "Shrink Volume".

3.A pop up window will appear. There you will see the maximum amount you can remove from the existing partition in "Size of available shrink space in MB" option .

4.In the "Enter the amount of space to shrink in MB" enter the amount of space you want to remove from the existing partition. Click on shrink button.

You will see an unallocated partition created after the previous partition with the size you specified.