I have a client with server 2012 running hyper-v hosting 2 x VHDX. One of the VHDX is dynamically expanding and filling the drive making them both pause.
I am unable to mount the drives in disk management, when I do the drives appear for a second and then vanish, however they mount in read only mode fine. There is a partition of free space (1Tb) on one of the drives which I need to zero out and remove or use a partition tool to move this to after the active volume.
Anyone have any ideas why the drives wont mount with write access in Disk management (or any other ways to zero the data and shrink the VM)