RHEL系统恢复安装光盘中的yum更新源的方法

安装光盘本地YUM更新源
挂载安装光盘：
 

PS：CentOS6.1更换为yum光盘源
 

Installed:
  gcc.i686 0:4.4.5-6.el6  
                                                                      
Dependency Installed:
  cloog-ppl.i686 0:0.15.7-1.2.el6                    cpp.i686 0:4.4.5-6.el6                    
  glibc-devel.i686 0:2.12-1.25.el6                   glibc-headers.i686 0:2.12-1.25.el6        
  kernel-headers.i686 0:2.6.32-131.0.15.el6          libgomp.i686 0:4.4.5-6.el6                
  mpfr.i686 0:2.4.1-6.el6                            ppl.i686 0:0.10.2-11.el6                  

Complete!