Hi,

I had an existing VM with two drives (C :  130 GB and E: 50 GB). I had applications and data in C near to ~70 GB. We had to convert the VHD to VHDX as the base machine OS was upgraded to Server 2012.

Now after converting , my VM rebooted, but now I see only one drive of around 130 GB. That is fine, but my problem comes now. The drive now shows only 5 GB empty. If I get the properties of all folders in C drive it is around ~70 GB.

I am not sure why the drive is showing me on 5 GB as available space when all it has comes around ~70 GB. Where has the rest ~50 GB gone and why is it not showing.

I am not sure what I can do, because there are lot of application on the VM and I do not want to format this and start installing all the applications again. Also I do not think we can add space as this is the system drive.

Any ideas what is happening and what can I do to clean up space

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• how did you perform the conversion?
• is it a fixed or dynamic virtual disk?
• Are you measuring the available space within the OS of the VM? (assuming so, but double checking)

First of all, upgrading to Hyper-V 2012 and later does not force a move to VHDX.  VHD will still work just fine (and will so for a long time).

If you use the inspect virtual disk wizard from the Hyper-V manager, what does it tell you about this disk?

Hi,

We hope your issue has been resolved, if you've found solution by yourself. We would appreciate it if you could share with us and we will mark it as answer.

Regards,

D. Wu