Splitting Hard Drive into Two Partitions Using Windows Vista Disk Management Snap-In

In this blog post, I will describe how to create another partition on the same hard drive using the Windows Vista Disk Management snap-in.

In this example I have Windows Vista Business Edition installed on 80 GB hard drive. After installing Windows Vista, I realized I should have split the hard into two partitions. With Windows XP and earlier version of Windows, you could not perform this operation without third-party software such as Acronis Disk Director. Windows Vista has the ability to expand and shrink volumes by using the Window Vista Disk Management snap-in. Administrative privileges are required for this task.


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What I Did

  1. Click on the Start Orb (formerly know as the Start Button in earlier version of Windows).
  2. Type diskmgmt.msc in the Start Search field.
  3. Press SHIFT+CTRL+ENTER to open Disk Management snap-in in an elevated state.
  4. Right-click C drive to select Shrink Volume….
  5. Enter the amount of drive space to shrink in Enter the amount of space to shrink in MB:.
  6. Click Shrink.


    When the Shrink operation is completed then you there should be unallocated space on the hard drive, refer to image below.

  7. Right-click the Unallocated Disk Space to select New Simple Volume….
  8. Click Next when the New Simple Volume Wizard opens.
  9. Enter the disk size of the new simple volume and click Next.
  10. Choose an available drive letter and click Next.
  11. Perform a quick format the new simple volume as NTFS. Name the volume and click Next.


  12. Review disk settings and click Finish.
  13. Congratulations, you now have successfully create a new partition using the Disk Management snap-in with Windows Vista.

Platforms Tested

  • Microsoft Windows Vista x86 Versions
Related Articles

Version 1.3
Edited: May 11, 2012


2 Responses to Splitting Hard Drive into Two Partitions Using Windows Vista Disk Management Snap-In

  1. Pingback: Merging Two Partitions Using Windows Vista Disk Management Snap-In « BillJr's Space

  2. Pingback: Slipstreaming / Integrating Windows Vista Service Pack 1 onto a Bootable Image / DVD « BillJr's Space

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