Extend VHD’s using VhdResizer

When you create a VHD, you have to specify the size of the disk. Once you reach that size, you will receive a out of free disk space message.

Fortunately, there is an easy way to extend your VHD. There is a tool called VhdResizer. This small tool enables you to resize an existing VHD. After you resize your disk, your VHD is still not extended. You still need to run the Disk Management utility from Windows to extend the volume.

So, here are the steps to make your existing VHD bigger…

  1. Download & install VhdResizer
  2. If you have attached the VHD, detach it from Disk Management
  3. Run VhdResizer and select the existing VHD
  4. Enter the location and name of the new VHD which will be created.
  5. Select the type, the new size and click “Resize”
  6. When the resizing is finished, your disk will be extended. However, the extended space is not available because it has not been allocated yet. Open Disk Management and attach the created VHD. You will see your new VHD and the unallocated extra space behind your VHD.
  7. Right-click your primary volume in the attached VHD and select “Extend volume…”
  8. In the wizard, click Next.
  9. Select a disk from the available disks to extend your VHD with and click Next.
  10. Click Finish.

You now have extended your VHD with the extra space and you will be able to use that space. That was not that hard, was it?


By Bart

Bart is a certified SharePoint consultant / architect at CTG Belgium NV with a broad professional experience in IT, a background in software development with a specialisation in Microsoft products and technologies and a solid knowledge and experience in Microsoft SharePoint Products and Technologies. He started as a COBOL developer on a mainframe environment and grew into software development for Windows platforms. Participated in projects varying from migrations of existing applications to development of Web applications and Windows applications. Became fascinated by the SharePoint 2007 platform and strongly believed in the added business value of this platform. Is since then fully committed to SharePoint and focuses on SharePoint implementations, migrations, integrations, design and coaching. Stays on top of new developments within the SharePoint technology stack and related technologies.

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