The Volume You Have Selected May Not Be Extended—Nettlesome Message, Stop It

"The volume you have selected may not be extended. Please select another volume and try again."—this is the common error message when you run Windows server 2003/2008 DiskPart.exe utility to extend a logical drive in an extended partition on a basic disk. That means diskpart failed to extend the volume.

Rely on Microsoft's solution?

The error message was analyzed by Microsoft, the truth is the Windows server 2003/2008 DiskPart.exe utility can not consider the free space behinds the extended partition to be usable free space. However, according to its solution and a series of requirements, how can we solve this problem flawlessly?

Error message can be solved by AOMEI Partition Assistant

Do not waste plenty of times for working out the problem by following the complex wizards DiskPart.exe suggest do any longer. There is a popular server partition manager tool named AOMEI Partition Assistant Server Edition can extend volume windows 2003 as you wish.

Extend volume Windows 2003 with illustrated wizard

Suppose we extend C: system volume, after run the AOMEI Partition Assistant Server, all the volume layouts shows us. If there is no unallocated space behind C: volume, you can release an unallocated space by shrinking D: partition.

  1. Select D:, drag the double-headed arrow to right to reduce D: partition as following do:

    Release free space for C: volume

  2. Then, you will see an unallocated space between C: and D: partition, also the D: partition has been shrunk from 160GB to 85.47GB.

    Make an Unallocated Disk Space

  3. Click C:, drag the double-headed arrow to right as well to add the unallocated space to C:

    Extend C: volume by adding free space

  4. The volume C: has been extended from 50GB to 124.52GB, and there are two pending operations marked by blue area. Please refer to the following:

    The Volume C: Extended

  5. All the pending operations will become effective only after click "Apply" on the toolbar to process these work. Try now, only several minutes, let you experience its powerful advantages.

You have put this into practice, right? You have experience its magic superiority as well? Yeah, the boring message—"The volume you have selected may not be extended" will never appear to let you down under the help of AOMEI Partition Assistant Server.

For enterprise users, Partition Assistant Unlimited Edition is a better choice to support the unlimited usage within one company. You can use Technician Edition to provide charged technical services to your clients.


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