Increase the Size of the C Drive in HyperV Instance

Question

_{Monday, April 9, 2012 4:59 AM}

Hi...

I have a HyperV Instance which is a dynamic disk.
I cant increase the C drive of that Volume. There are other Drives where I can increase the size easily.

Need Help !!!

Thanks

Irshard Zahir

All replies (12)

_{Monday, April 9, 2012 6:12 AM}

Hi,

If you want to increase the size of C drive in Disk Management, there should be unallocated disk space between C drive and D drive.

For more information, you can refer to:

Extend System/Boot Volume on Windows Server 2008/ Windows Vista/Win7 Beta
http://blogs.technet.com/b/mghazai/archive/2009/02/24/extend-system-boot-volume-on-windows-server-2008-windows-vista-win7-beta.aspx

By the way, if the operating system is Windows XP or Windows Server 2003, you can’t extend the system drive with Disk Management.

How to extend a data volume in Windows Server 2003, in Windows XP, in Windows 2000, and in Windows Server 2008
http://support.microsoft.com/kb/325590/en-us

Vincent Hu

TechNet Community Support

_{Monday, April 9, 2012 6:20 AM}

Hi..

Since the disk is Dynamic it doesn't show "extend Volume option" in C drive.

It shows in other Drives.

Irshard Zahir

_{Monday, April 9, 2012 6:26 AM}

Hi,

Did you mean dynamic extending VHD or dynamic disk opposite to basic disk?

By the way, please open Disk Management and take a screenshot of the disk, upload the screenshot here.

Vincent Hu

TechNet Community Support

_{Monday, April 9, 2012 6:34 AM}

Please find the Screen Shot. I want to increase the C Drive space.

Irshard Zahir

_{Monday, April 9, 2012 6:46 AM}

You have a few options but as a starter it would have been better to create a disk for each partition so you can easily extend them without running into this.

Depending on the software running from E:, both options can be done by using WinRE or WinPE

1. Create a new disk for you virtual machine in Hyper-V, move everything from E: to that new one, delete the original E: and extend C:

2. Use a partitioning tool to move E: to the back so you can extend your C:

_{Monday, April 9, 2012 6:47 AM}

Hi,

According to the screenshot, "Extend Volume" is not available because there isn’t continuous unallocated space behind this partition. In your environment, the continuous unallocated space is behind E drive, so you can extend E drive. If you want to extend C drive, you have the following options.

1. Backup important data in E drive, extend C drive to the desired size, create a new E drive with rest disk space.
2. Use other partition tool to resize E drive, so you can put some unallocated disk space between C drive and E drive, then extend C drive.

Following screenshot is my C drive, I can extend it because there is continuous unallocated space behind it.

Vincent Hu

TechNet Community Support

_{Monday, April 9, 2012 7:01 AM}

HI All,

I have installed Applications on the E Drive .

Thanks

Irshard Zahir

_{Tuesday, April 10, 2012 6:17 AM}

Hi,

Have you read the above suggestions?

Vincent Hu

TechNet Community Support

_{Wednesday, April 11, 2012 3:11 AM}

Hi..

I read above suggestions ,my problem is I cannot delete the current E drive. Since all my applications are installed on it.

Is there any other alternatives?

Thanks

Irshard Zahir

_{Wednesday, April 11, 2012 3:14 AM}

Hi,

Then you need to use some other partition tool to resize the current E drive.

Vincent Hu

TechNet Community Support

_{Wednesday, April 11, 2012 3:22 AM}

HI,

What do you recommend ?

Irshard Zahir

_{Wednesday, April 11, 2012 3:25 AM}

Hi,

Search key words “partition tool” with search engine and you will be able to get lots of result.

Vincent Hu

TechNet Community Support