centos挂载第二块硬盘

一、首先使用fdisk -l命令，列出所有的分区（需要管理员权限）

fdisk -l   #可以列出所有的分区,包括没有挂上的分区和usb设备.我一般用这个来查找需要挂载的分区的位置,比如挂上u盘.

如下/dev/sda 表示我的第一块硬盘；/dev/sdb表示我的第二块硬盘：

[root@cenos68Netcard sdb]# fdisk -l

Disk /dev/sda: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000193b9

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          64      512000   83  Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2              64        1306     9972736   8e  Linux LVM

Disk /dev/sdb: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000


Disk /dev/mapper/vg_cenos68netcard-lv_root: 9135 MB, 9135194112 bytes
255 heads, 63 sectors/track, 1110 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000


Disk /dev/mapper/vg_cenos68netcard-lv_swap: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

mkfs.ext4 /dev/sdb #将硬盘格式化为ext4的格式二、格式化硬盘

当然也可以使用其他命令格式化为其他格式

三、挂载硬盘

mkdir  /mnt/sdb     #创建一个文件夹
mount /dev/sdb  /mnt/sdb   #挂载硬盘

我们可以通过df -h查看挂载好的硬盘（以下我把/dev/sdb 挂载到了mnt分区）：

[root@cenos68Netcard sdb]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_cenos68netcard-lv_root
                      8.3G  5.0G  2.9G  64% /
tmpfs                 751M  1.4M  749M   1% /dev/shm
/dev/sda1             477M   66M  386M  15% /boot
/dev/sdb              9.8G   23M  9.2G   1% /mnt

修改/etc/fstab即可，如下四、设置开机自动挂载

/dev/mapper/vg_cenos68netcard-lv_root /                       ext4    defaults        1 1
UUID=087b4289-cc6c-46d8-a0f4-c80b7d374087 /boot                   ext4    defaults        1 2
/dev/mapper/vg_cenos68netcard-lv_swap swap                    swap    defaults        0 0
tmpfs                   /dev/shm                tmpfs   defaults        0 0
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
sysfs                   /sys                    sysfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0
/dev/sdb               /mnt                     ext4    defaults        0 0