CentOS and RHEL go "yum install" with DVD images

1. Locate your DVD root directory .
ex. /media/CentOS* , /media/RHEL*

2. Create a symbolic link to /media/dvd_image
ln -s /media/CentOS /media/dvd_image

3. Edit /etc/yum.conf.d/dvd.repo , adding the following

[dvd]
name=dvd
baseurl=file:///media/dvd_image/Server
enabled=1
gpgcheck=0

4. Update yum database

yum update

5. Install packages needed