cdrom(HW)                       19 June 1992                       cdrom(HW)


 Name

    cdrom - compact disk devices

 Description

    The cdrom devices implement the interface with compact disk drives.

    The character special CD devices (/dev/rcd0 and so forth) support raw I/O
    in multiples of the physical sector size of the CD-ROM (typically 2048
    bytes).

    The block special CD devices (/dev/cd0 and so forth) support buffered
    I/O.

    The minor device number determines which compact disk unit will be
    accessed. The correspondence beween the unit number and the SCSI host
    adaptor, controller and LUN is defined in the SCSI configuration file
    /etc/conf/cf.d/mscsi.

 Files

    /dev/cd[0-n]
    /dev/rcd[0-n]
    /usr/lib/mkdev/cdrom

 See also

    mkdev(ADM), scsi(HW)

 Notes

    Because the CD-ROM is a read-only device it is only possible to open it
    for input.

    The command mkdev cdrom can be used to interactively configure the CD-ROM
    driver.