Cluster Physical Disk Resource deleted

After deleting a Physical Disk Resource (NT4 Cluster), there is no way in recreating the resource. If i try to create a Physical disk Resource, at the last Screen where i should be able to choose a physical disk, the list is just EMPTY !
The disk iavailable in the explorer and Disk Manager as well… there are NO Resources referencing to this Drive anymore within the Cluster Administration!

Could someone please give me some support in getting this Drive (Letter) back as a Physical Disk resource ??

Best regards

Marcel