///第一步查看挂载信息///
[root@VM_0_16_centos etc]# fdisk -l //查看已挂载磁盘状态
*Disk /dev/vda: 53.7 GB, 53687091200 bytes, 104857600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x0009ac89
Device Boot Start End Blocks Id System
/dev/vda1 * 2048 104857566 52427759+ 83 Linux
Disk /dev/vdb: 107.4 GB, 107374182400 bytes, 209715200 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes*
操作解释:Disk /dev/vda显示已经挂载(为系统盘)
Disk /dev/vdb显示未挂载(新购硬盘)
[root@VM_0_16_centos etc]# df -h //查看挂载磁盘信息
Filesystem Size Used Avail Use% Mounted on
devtmpfs 3.9G 0 3.9G 0% /dev
tmpfs 3.9G 40K 3.9G 1% /dev/shm
tmpfs 3.9G 596K 3.9G 1% /run
tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/vda1 50G 7.2G 40G 16% /
tmpfs 783M 0 783M 0% /run/user/0
///第二步磁盘分区处理即挂载vdb///
[root@VM_0_16_centos etc]# fdisk /dev/vdb
Welcome to fdisk (util-linux 2.23.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0xbda237a9.
Command (m for help): n
Partition type:
p primary (0 primary, 0 extended, 4 free)
e extended
Select (default p): p
Partition number (1-4, default 1): 1
First sector (2048-209715199, default 2048):
Using default value 2048
Last sector, +sectors or +size{
K,M,G} (2048-209715199, default 209715199):
Using default value 209715199
Partition 1 of type Linux and of size 100 GiB is set
Command (m for help): wq
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
操作解释:输入"fdisk /dev/vdb",我们需要根据界面的提示,依次输入"n"(新建分区)、“p”(新建主分区)、“1”(使用第1个主分区),两次回车(使用默认配置),输入"wq"(保存分区表),回车开始分区。
[root@VM_0_16_centos etc]# fdisk -l //再次查看挂载磁盘信息
Disk /dev/vda: 53.7 GB, 53687091200 bytes, 104857600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x0009ac89
Device Boot Start End Blocks Id System
/dev/vda1 * 2048 104857566 52427759+ 83 Linux
Disk /dev/vdb: 107.4 GB, 107374182400 bytes, 209715200 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0xbda237a9
Device Boot Start End Blocks Id System
/dev/vdb1 2048 209715199 104856576 83 Linux
解释:显示已经挂载成功!!!
第三步进行磁盘格式化操作//
[root@VM_0_16_centos etc]# mkfs.ext3 /dev/vdb1 //磁盘格式化
mke2fs 1.42.9 (28-Dec-2013)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
6553600 inodes, 26214144 blocks
1310707 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
800 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872
Allocating group tables: done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
//第四步创建挂载磁盘目录挂载点
[root@VM_0_16_centos etc]# mkdir -p /home //创建挂载目录点
[root@VM_0_16_centos etc]# mount /dev/vdb1 /home //挂载目录
[root@VM_0_16_centos etc]# mount -a
[root@VM_0_16_centos etc]# echo '/dev/vdb1 /home ext3 defaults 1 2' >> /etc/fstab //设置开机启动
[root@VM_0_16_centos etc]# df -h //检查挂载后信息显示
Filesystem Size Used Avail Use% Mounted on
devtmpfs 3.9G 0 3.9G 0% /dev
tmpfs 3.9G 40K 3.9G 1% /dev/shm
tmpfs 3.9G 600K 3.9G 1% /run
tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/vda1 50G 7.2G 40G 16% /
tmpfs 783M 0 783M 0% /run/user/0
/dev/vdb1 99G 60M 94G 1% /home
[root@VM_0_16_centos etc]#
到此就完成了。
另附更改磁盘的挂载目录:
比如想把已经挂载在home目录上的硬盘挂载到data目录上, 如下操作
#df -h(查看分区情况及数据盘名称)
# mkdir /data(如果没有data目录就创建,否则此步跳过)
# umount /home(卸载硬盘已挂载的home目录)
# mount /dev/sdb3 /data (挂载到data目录)
# vi /etc/fstab (编辑fstab文件修改或添加,使重启后可以自动挂载)
/dev/sdb3 /data ext3 auto 0 0
数据盘 新挂载目录
编辑/etc/fstab里面的/home为/data, 或创建让系统启动的时候自动挂载到/data
vim /etc/rc.local