[[email protected] ~]# fdisk /dev/sdb    //进入要分配的磁盘

WARNING: DOS-compatible mode is deprecated. It‘s strongly recommended to

switch off the mode (command ‘c‘) and change display units to

sectors (command ‘u‘).

Command (m for help): n   //创建分区

Command action

e   extended

p   primary partition (1-4)

e     //创建扩展分区

Partition number (1-4): 4      //分区号

First cylinder (5121-10240, default 5121):        //分区开始柱面，enter默认

Using default value 5121

Last cylinder, +cylinders or +size{K,M,G} (5121-10240, default 10240):      //分区结束柱面

Using default value 10240

Command (m for help): p      //打印分区情况

Disk /dev/sdb: 10.7 GB, 10737418240 bytes

64 heads, 32 sectors/track, 10240 cylinders

Units = cylinders of 2048 * 512 = 1048576 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0xb92c060c

Device Boot      Start         End      Blocks   Id  System

/dev/sdb1               1        5120     5242864   83  Linux

/dev/sdb4            5121       10240     5242880    5  Extended

Command (m for help): n    //创建分区

Command action

l   logical (5 or over)

p   primary partition (1-4)

l                                 //创建逻辑分区

First cylinder (5121-10240, default 5121):        //分区开始柱面，enter默认

Using default value 5121

Last cylinder, +cylinders or +size{K,M,G} (5121-10240, default 10240): 8192

Command (m for help): n             //再创建一个分区

Command action

l   logical (5 or over)

p   primary partition (1-4)

l                                                       //再创建一个逻辑分区

First cylinder (8193-10240, default 8193):                      //分区开始柱面，enter默认

Using default value 8193

Last cylinder, +cylinders or +size{K,M,G} (8193-10240, default 10240):   //分区结束柱面

Using default value 10240

Command (m for help): p     //打印分区表进行查看

Disk /dev/sdb: 10.7 GB, 10737418240 bytes

64 heads, 32 sectors/track, 10240 cylinders

Units = cylinders of 2048 * 512 = 1048576 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0xb92c060c

Device Boot      Start         End      Blocks   Id  System

/dev/sdb1               1        5120     5242864   83  Linux

/dev/sdb4            5121       10240     5242880    5  Extended

/dev/sdb5            5121        8192     3145712   83  Linux

/dev/sdb6            8193       10240     2097136   83  Linux

Command (m for help): w     //w保存上面设置，q退出而不报错

The partition table has been altered!

Calling ioctl() to re-read partition table.

WARNING: Re-reading the partition table failed with error 16: Device or resource busy.

The kernel still uses the old table. The new table will be used at

the next reboot or after you run partprobe(8) or kpartx(8)

Syncing disks.

[[email protected] ~]# mkfs.ext4 /dev/sdb5            //格式化

mke2fs 1.41.12 (17-May-2010)

Could not stat /dev/sdb5 --- No such file or directory        //这里注意一下，先执行partprobe命令让系统内核重读分区表，如果报错要reboot一下

[[email protected] ~]#  mkfs.ext4 /dev/sdb5   //格式化/dev/sdb5

mke2fs 1.41.12 (17-May-2010)

Filesystem label=

OS type: Linux

Block size=4096 (log=2)

Fragment size=4096 (log=2)

Stride=0 blocks, Stripe width=0 blocks

196608 inodes, 786428 blocks

39321 blocks (5.00%) reserved for the super user

First data block=0

Maximum filesystem blocks=805306368

24 block groups

32768 blocks per group, 32768 fragments per group

8192 inodes per group

Superblock backups stored on blocks:

32768, 98304, 163840, 229376, 294912

Writing inode tables: done

Creating journal (16384 blocks): done

Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 28 mounts or

180 days, whichever comes first.  Use tune2fs -c or -i to override.

[[email protected] ~]# mkfs.ext4 /dev/sdb6        //格式化/dev/sdb6

mke2fs 1.41.12 (17-May-2010)

Filesystem label=

OS type: Linux

Block size=4096 (log=2)

Fragment size=4096 (log=2)

Stride=0 blocks, Stripe width=0 blocks

131072 inodes, 524284 blocks

26214 blocks (5.00%) reserved for the super user

First data block=0

Maximum filesystem blocks=536870912

16 block groups

32768 blocks per group, 32768 fragments per group

8192 inodes per group

Superblock backups stored on blocks:

32768, 98304, 163840, 229376, 294912

Writing inode tables: done

Creating journal (8192 blocks): done

Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 33 mounts or

180 days, whichever comes first.  Use tune2fs -c or -i to override.

[[email protected] var]# mkdir /disk01

[[email protected] var]# mkdir /disk02

[[email protected] var]# mount /dev/sdb5 /disk01             //挂载分区

[[email protected] var]# mount /dev/sdb6 /disk02

[[email protected] var]# df -h

Filesystem            Size  Used Avail Use% Mounted on

/dev/mapper/VolGroup-lv_root

50G  3.9G   43G   9% /

tmpfs                 940M   72K  940M   1% /dev/shm

/dev/sda1             485M   38M  423M   9% /boot

/dev/mapper/VolGroup-lv_home

45G  532M   43G   2% /home

/dev/sdb5             3.0G   69M  2.8G   3% /disk01

/dev/sdb6             2.0G   35M  1.9G   2% /disk02

[[email protected] var]# vi /etc/fstab                  //添加到配置文件，这里略

原文：http://lk886655.blog.51cto.com/7036409/1965412