备份/etc/yum.repos.d中的文件

cd /etc/yum.repos.d

touch CentOS-Base.repo

vim CentOS-Base.repo

mount /dev/cdrom /mnt 挂载镜像文件

[BaseOS]

name=CentOS-BaseOS

baseurl=file:///mnt/BaseOS

gpgcheck=0

enabled=1

[APP]

name=CentOS-APP

baseurl=file:///mnt/AppStream

gpgcheck=0

enabled=1