You will encounter this problem because the Disk where you are trying to mount the Mount Point is in use by the High Availability Cluster. We’ll all is not lost, there is a solution! And you are now dead in the water, or at least you think. So there you are adding a new drive to a folder on a mounted drive on a Microsoft Windows Server 2008 R2 / 2012 R2 Clustered SQL server and during the format and assigning of the disk to the folder of the mount drive a big error pops up stating Parameter is Incorrect.
