给linux添加新硬盘

现在需要把一块1T的硬盘挂载在一台正在跑业务的机器上：

先用fdisk -l 看看新的硬盘认出来没有：

[root@localhost ~]# fdisk -l

Disk /dev/sda: 146.8 GB, 146815733760 bytes
255 heads, 63 sectors/track, 17849 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          13      104391   83  Linux
/dev/sda2              14        1543    12289725   82  Linux swap / Solaris
/dev/sda3            1544       17849   130977945   83  Linux

Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/sdb doesn't contain a valid partition table

我的1T硬盘服务器已经识别出来，不过现在处于空闲状态

下面开始给新硬盘分区

[root@localhost ~]# fdisk /dev/sdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel. Changes will remain in memory only,
until you decide to write them. After that, of course, the previous
content won't be recoverable.


The number of cylinders for this disk is set to 121601.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
   (e.g., DOS FDISK, OS/2 FDISK)
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

Command (m for help): p

Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System

Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-121601, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-121601, default 121601):
Using default value 121601

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.

 

Command (m for help):p  //查看新硬盘的分区

Command (m for help):n  //创建新分区

可以用m命令来看fdisk命令的内部命令；n命令创建一个新分区；d命令删除一个存在的分区；p命令显示分区列表；t命令修改分区的类型ID号；l命令显示分区ID号的列表；a命令指定启动分区；w命令是将对分区表的修改存盘让它发生作用。

Command action

   e   extended   //输入e为创建扩展分区

   p   primary partition (1-4)   //输入p为创建主分区，这里我们选择p

Partion number(1-4)：1  //第一个扩展分区，按你需求可以最多分4个主分区

First Cylinder(1-1014,default 1):  1  //第一个主分区起始的磁盘块数

Last cylinder or +size or +sizeM or +sizeK (1-121601, default 121601): //第一个主分区结束的磁盘块数

Command (m for help): w  //创建完后用w保存分区

 

接下来给新硬盘格式化：

mkfs -t ext3 -c /dev/sdb1

 

 

格式化完后我们需要进行挂载分区:

mount /dev/sdb1 /www

 

修改/etc/fstab文件来进行自动挂载:

/dev/sdb1    /www     ext3    defaults        1 2

 

到此我们添加新硬盘的工作结束了。