①挂载镜像到 /mnt/cdrom mkdir /mnt/cdrom ISO镜像临时挂载 : mount -o loop ISO镜像 /mnt/cdrom 光驱临时挂载 : mount /dev/sr0 /mnt/cdrom ISO镜像开机自动挂载:更改etc下fstab文件 /root/CentOS-6.9-x86_64-bin-DVD1.iso /mnt/cdrom iso9660 loop,defaults 13 光驱开机自动挂载:更改etc下fstab文件 /dev/cdrom /…
阿里云镜像源地址：http://mirrors.aliyun.com/ ①备份原镜像源文件到原文件夹，便于恢复 mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup ②下载新的CentOS-Base.repo 到/etc/yum.repos.d/ CentOS 5 wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Cen…