mount DVD in RHEL 5

I was not able to find this on internet and on forums. But I knew I had one Linux box where I had done full installation and DVD would get mounted there. Hence ran ls -l /dev/dvd and found that it is soft linked to hdc. So did the following:

[root@smtreeprd05 ~]# ln -s /dev/hdc /dev/dvd
[root@smtreeprd05 ~]# ls -l /dev/dvd
lrwxrwxrwx 1 root root 8 Jun  4 01:22 /dev/dvd -> /dev/hdc
[root@smtreeprd05 ~]# mount /dev/dvd /mnt/
mount: block device /dev/dvd is write-protected, mounting read-only
[root@smtreeprd05 ~]# cd /mnt/
[root@smtreeprd05 mnt]# ls
Cluster         README-en.html  README-or.html         RELEASE-NOTES-de.html  RELEASE-NOTES-ml.html     RPM-GPG-KEY-fedora
ClusterStorage  README-es.html  README-pa.html         RELEASE-NOTES-en       RELEASE-NOTES-mr.html     RPM-GPG-KEY-fedora-test
EULA            README-fr.html  README-pt_BR.html      RELEASE-NOTES-en.html  RELEASE-NOTES-or.html     RPM-GPG-KEY-redhat-auxiliary
eula.en_US      README-gu.html  README-ru.html         RELEASE-NOTES-es.html  RELEASE-NOTES-pa.html     RPM-GPG-KEY-redhat-beta
GPL             README-hi.html  README-si.html         RELEASE-NOTES-fr.html  RELEASE-NOTES-pt_BR.html  RPM-GPG-KEY-redhat-former
images          README-it.html  README-ta.html         RELEASE-NOTES-gu.html  RELEASE-NOTES-ru.html     RPM-GPG-KEY-redhat-release
isolinux        README-ja.html  README-te.html         RELEASE-NOTES-hi.html  RELEASE-NOTES-si.html     Server
README-as.html  README-kn.html  README-zh_CN.html      RELEASE-NOTES-it.html  RELEASE-NOTES-ta.html     TRANS.TBL
README-bn.html  README-ko.html  README-zh_TW.html      RELEASE-NOTES-ja.html  RELEASE-NOTES-te.html     VT
README-de.html  README-ml.html  RELEASE-NOTES-as.html  RELEASE-NOTES-kn.html  RELEASE-NOTES-zh_CN.html
README-en       README-mr.html  RELEASE-NOTES-bn.html  RELEASE-NOTES-ko.html  RELEASE-NOTES-zh_TW.html

Thanks.