Amazon with EBS system - needs to do detach of EBS not assign to a Instance

Startup Up instances on a system that was shutdown the previous day. DBroot 2 EBS was attached to PM1, but it was assigned to PM2. So the system failed to come up.

There is code to unmount disk that are not assigned to a certain PM. But not to detach a EBS volume.

So code needs to be addded to do the detach on ebs volumnes that arent assigned to a specific pm.