SUNWvolu
volcancel cancels a user’s request to access a particular floppy or CD-ROM file system. This command is useful when the removable media containing the file system is not currently in the drive.
Use the path /vol/rdsk/name_of_volume to specify the volume. If called without a volume name to cancel, volcancel checks for Volume Management running.
To cancel a request to access an unnamed CD-ROM , use
example% /usr/lib/vold/volcancel vol/rdsk/unnamed_cdrom
To check if volume management is running, use:
example% /usr/lib/vold/volcancel || echo volmgmt not running