Failed to extend partition

by Ceisc   Last Updated October 22, 2017 18:00 PM

I have a virtualised instance of Windows Server 2012 R2.

I changed the size of one of the underlying virtual disks from 800Gb to 2Tb.

I scanned the drives in Compmgmt and found that it was correctly seeing the new size.

I told disk management to extend the disk up to 2Tb. At this point it gave an error (which I failed to correctly note down, but was something like "the operation is not correct" or "operation failed, the parameter is not correct".)

Disk Management (before I closed it) was showing that the volume was now 2Tb.

The view from "This PC" shows the disk as still being 800Gb.

I then restarted the machine, hoping that one of these would correct itself.

After the restart the view in "This PC" still shows 800Gb and disk management refuses to show anything as it's trying to connect to the virtual disk service.

The virtual disk service (as per services.msc) is not running. Nor will it start (times out when trying).

Taking a look with DISKPART shows that the partition is 2Tb in size.

If anyone has any idea on how I can get everything to agree on the size of my partition and how to get the virtual disk service running it'd be greatly appreciated.

I also extended another partition on another disk on this host from 150Gb to 250Gb with no issues. The only differences between these disks are that the sizes on the one which worked are smaller and the failed one is using ReFS rather than NTFS.

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