Set up yum repository for locally-mounted DVD onRHEL 5

Mount the RHEL 5 installation ISO somewhere like /media/rhel5dvd, e.g.:

Mount the RHEL 5 installation ISO somewhere like /media/rhel5dvd, e.g.:
# mount -o loop RHEL5.9-Server-20121129.0-x86_64-DVD.iso /media/rhel5dvd
Check the numeric value found on the first line of the .discinfo file from the mounted DVD
# head -n1 /media/rhel5dvd/.discinfo
1354216429.587870
Create a new file in /etc/yum.repos.d/, e.g. /etc/yum.repos.d/dvd.repo and add the following content to it
[dvd-Server]
mediaid=1354216429.587870
name=RHEL 5 Server DVD
baseurl=file:///media/rhel5dvd/Server
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
enabled=1
gpgcheck=1
Customize the file appropriately, i.e.:
The value of baseurl must match up with where the DVD was mounted in step #1
If using RHEL Client or Workstation, the last directory in the baseurl will need to be changed to Client
Set the numeric value found from .discinfo file to mediaid.
As a final step, it might be a good idea to run the command yum clean all once Also note that if the system is registered to Red Hat Network, yum can be run with the --noplugins option to prevent it from connecting to RHN
Optional: To configure access to the supplementary packages in the directories Cluster, ClusterStorage, VT, add additional repositories for them in the same file, e.g.:
[dvd-cluster]
mediaid=1354216429.587870
name=DVD for RHEL5 - Cluster
baseurl=file:///media/rhel5dvd/Cluster
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
enabled=1
gpgcheck=1

[dvd-cluster-storage]
mediaid=1354216429.587870
name=DVD for RHEL5 - ClusterStorage
baseurl=file:///media/rhel5dvd/ClusterStorage
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
enabled=1
gpgcheck=1

[dvd-vt]
mediaid=1354216429.587870
name=DVD for RHEL5 - VT
baseurl=file:///media/rhel5dvd/VT
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
enabled=1
gpgcheck=1
Note: Make sure to customize the above as in step #3.
Optional and specific to RHEL5 Client: To configure access to the packages in the Workstation directory, add a repo stanza to the above file for that as well, e.g.:
[dvd-workstation]
mediaid=1354233478.680018
name=DVD for RHEL5 - Workstation
baseurl=file:///media/rhel5dvd/Workstation
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
enabled=1
gpgcheck=1