When a VDM is terminated, DOS Emulation closes all handles that have been assigned to all PDB processes within the VDM. All resources associated with open FCBs are also closed.
Since the VDM may have been terminated due to an error in a DOS application within the VDM, no data within the VDM is relied upon when closing resources and cleaning up. DOS Emulation explicitly closes both the files and the OS/2 devices opened by the VDM.