IFSMgr_CDROM_Detach( unsigned long Drive, unsigned long VRP )
This service is called by the CD-ROM driver to detach a drive after a preceding attach call. The IFS manager looks for the drive with the correct system volume handle and then performs the detach on that volume.
Drive
Supplies the 0-based drive number of the drive the detachment needs to be done for.
VRP
Supplies the system volume handle of the volume to be detached.