linux mount 硬盘挂载和卸载

Linux 挂载

[root@whp6 ~]# mount /dev/sdb5 /mnt/
[root@whp6 ~]# df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda3        16G  .1G   13G  % /
tmpfs           931M       931M   % /dev/shm
/dev/sda1       194M   28M  157M  % /boot
/dev/sdb5       .0G   68M  .9G   % /mnt
[root@whp6 ~]# df -T
Filesystem     Type  1K-blocks    Used Available Use% Mounted on
/dev/sda3      ext4        % /
tmpfs          tmpfs                  % /dev/shm
/dev/sda1      ext4              % /boot
/dev/sdb5      ext4             % /mnt
[root@whp6 ~]#

备注：如果挂载到有文件的目录下 会遮挡原先文件 必须卸载挂载的硬盘 才能显示

[root@whp6 ~]# ls /home/
.txt      wanghaipeng  whp
[root@whp6 ~]# mount /dev/sdb1 /home/
[root@whp6 ~]# ls /home
lost+found
[root@whp6 ~]# umount /home
[root@whp6 ~]# ls /home
.txt      wanghaipeng  whp
[root@whp6 ~]#

Linux umount  卸载

[root@whp6 /]# mount LABEL=wanghaipeng /home/whp/
[root@whp6 /]# df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda3        16G  .1G   13G  % /
tmpfs           931M       931M   % /dev/shm
/dev/sda1       194M   28M  157M  % /boot
/dev/sdb5       .0G   68M  .9G   % /mnt
/dev/sdb1       .0G   74M  .9G   % /home/whp
[root@whp6 /]# umount -l /home/whp/
[root@whp6 /]# df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda3        16G  .1G   13G  % /
tmpfs           931M       931M   % /dev/shm
/dev/sda1       194M   28M  157M  % /boot
/dev/sdb5       .0G   68M  .9G   % /mnt
[root@whp6 /]#