2.挂载光盘步骤 [root@centos ~]# mount /dev/cdrom /mnt/ #挂载光盘mount: /dev/sr0 is write-protected, mounting read-only[root@centos ~]# df -h #查看挂载情况Filesystem Size Used Avail Use% Mounted on/dev/sda1 20G 1.6G 18G 8% /devtmpfs 901M 0 901M 0% /devtmpfs 912M 9.0M 903...