When trying to extend a partition in Windows 2008 Server with Diskpart, I received an error message: "Diskpart failed to extend the volume. Please make sure the volume is valid for extending"
Hello, for resize the partition in windows 2008 server, I suggest you to use Aomei partition assistant server edition, you can download the free edition to test, here is a tutorial you can follow http://www.partition-magic.org/windows-server-2008/windows-server-2008-resize-partition.html, it's very easy to extend the partition in fact. Good luck.
