1创建挂载目录

mkdir /media/rhel/

2挂载到指定目录
挂载iso到/media/rhel/

mount -o loop /usr/local/src/CentOS-6.5-x86_64-bin-DVD1.iso /media/rhel/

3修改文件
cd /etc/yum.repos.d/ 两个文件改名，绕过网络安装
mv CentOS-Base.repo CentOS-Base.repose_bak
mv CentOS-Debuginfo.repo CentOS-Debuginfo.repo_bak
mv CentOS-Media.repo CentOS-Media.repo_bak
vi /etc/yum.repos.d/CentOS-Media.repo
[HZ-media]
name=CentOS 6.5
baseurl=file:///media/rhel/
gpgcheck=1
enabled=1

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

4开机自动挂载
vi /etc/rc.d/rc.local

mount -o loop /usr/local/src/CentOS-6.5-x86_64-bin-DVD1.iso /media/rhel/

5测试YUM yum list 清除yum缓存 yum clean all