The Volume Management daemon, vold, creates and maintains a file system image rooted at root-dir that contains symbolic names for CD-ROM and floppy, ZIP/JAZ, and DVD-ROM devices and other removable devices. Use volcheck command to checks for media in a drive and by default checks all floppy media.

1) First put CDROM/DVD into drive

2) For CDROM: After few second change directory /cdrom/cdrom0 or /cdrom/VOL_NAME

# cd /cdrom/cdrom0

3) For DVDROM: After few second change directory /dvd/VOL_NAMRE

If this does not works make sure volmgt daemon is running:

# /etc/init.d/volmgt start

Scan for devices both cd or floopy using:

#volcheck

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