[root@nfs52185 yum.repos.d]# ls

CentOS-Base.repo.bak  CentOS-Debuginfo.repo.bak  CentOS-Media.repo  CentOS-Media.repo.bak  CentOS-Vault.repo.bak

[root@nfs52185 yum.repos.d]# 




[root@nfs52185 yum.repos.d]# cat CentOS-Media.repo.bak 

# CentOS-Media.repo

#

#  This repo can be used with mounted DVD media, verify the mount point for

#  CentOS-6.  You can use this repo and yum to install items directly off the

#  DVD ISO that we release.

#

# To use this repo, put in your DVD and use it with the other repos too:

#  yum --enablerepo=c6-media [command]

#  

# or for ONLY the media repo, do this:

#

#  yum --disablerepo=\* --enablerepo=c6-media [command]

 

[c6-media]

name=CentOS-$releasever - Media

baseurl=file:///media/CentOS/

        file:///media/cdrom/

        file:///media/cdrecorder/

gpgcheck=1

enabled=0

gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6

[root@nfs52185 yum.repos.d]# 


yum update