[root@kid /]# mount /dev/cdrom /root/MY_CD
mount: /dev/sr0 is write-protected, mounting read-only
# 查看[root@kid /]# cd /root/MY_CD/[root@kid MY_CD]# ls
CentOS_BuildTag EULA images LiveOS repodata RPM-GPG-KEY-CentOS-Testing-7
EFI GPL isolinux Packages RPM-GPG-KEY-CentOS-7 TRANS.TBL
1.4卸载解释
将磁盘设备上的门拆除掉,解除设备文件与目录之间的关系.
umount /MY_CD
[root@kid ~]# ls
anaconda-ks.cfg a.txt MY_CD
[root@kid ~]# unount MY_CD/
-bash: unount: command not found
[root@kid ~]# unount MY_CD
-bash: unount: command not found
[root@kid ~]# umount MY_CD[root@kid ~]# ls
anaconda-ks.cfg a.txt MY_CD
[root@kid ~]# cd M
-bash: cd: M: No such file or directory
[root@kid ~]# cd MY_CD/[root@kid MY_CD]# ls
[root@kid ~]# cat /etc/fstab## /etc/fstab# Created by anaconda on Thu Dec 9 15:30:04 2021## Accessible filesystems, by reference, are maintained under '/dev/disk'# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info#
/dev/mapper/centos-root / xfs defaults 00UUID=de33dc3a-b7d1-4d69-92e6-767617b8a1d9 /boot xfs defaults 00[root@kid ~]#