Manually mounting of CDs/DVDs

Dear All

I have added the line

/dev/hdf /mnt/dvd auto
umask=0,user,iocharset=iso8859-1,codepage=850,noauto,ro,exec,users 0 0

to /etc/fstab, in order to make it possible for a user manually
mounting CDs/DVDs. However, I am not being successful:

$ mount /dev/dvd
mount: wrong fs type, bad option, bad superblock on /dev/hdf,
      missing codepage or other error
      In some cases useful info is found in syslog - try
      dmesg | tail  or so

$

Any ideas?

Thanks in advance,

Paul