查看磁盘

以root用户登录，执行fdisk -lu查看所有磁盘信息

创建分区

进入磁盘/dev/sdb命令： fdisk /dev/sdb 输入m 查看命令帮助如下：

[email protected]:/# fdisk /dev/sdb 

Welcome to fdisk (util-linux 2.29.2).
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.
Created a new DOS disklabel with disk identifier 0x886fa276.

Command (m for help): m

Help:

  DOS (MBR)
   a   toggle a bootable flag
   b   edit nested BSD disklabel
   c   toggle the dos compatibility flag

  Generic
   d   delete a partition
   F   list free unpartitioned space
   l   list known partition types
   n   add a new partition
   p   print the partition table
   t   change a partition type
   v   verify the partition table
   i   print information about a partition

  Misc
   m   print this menu
   u   change display/entry units
   x   extra functionality (experts only)

  Script
   I   load disk layout from sfdisk script file
   O   dump disk layout to sfdisk script file

  Save & Exit
   w   write table to disk and exit
   q   quit without saving changes

  Create a new label
   g   create a new empty GPT partition table
   G   create a new empty SGI (IRIX) partition table
   o   create a new empty DOS partition table
   s   create a new empty Sun partition table

输入n 进行分区:

一定记得输入w才能保存分区更改

fdisk -l 新增分区为/dev/sdb1

格式化

# mkfs.ext4 /dev/sdb1

挂载

mount 命令可以将分区挂载到目录下

建立/opt/app目录

# mkdir /opt/app

挂载

# mount /dev/sdb1 /opt/app

查看

# df -h

配置开机自动挂载

vim /etc/fstab

后面追加一行：

/dev/sdb1(磁盘分区) /opt/app（挂载目录） ext4（文件格式）defaults 0 0