添加硬盘开机后
dmesg | grep sd
sda: sda1 sda2
sdb: unknown partition table
创建硬盘信息
fdisk /dev/sdb
Command (m for help): m
Command action
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition
l list known partition types
m print this menu
n add a new partition
o create a new empty DOS partition table
p print the partition table
q quit without saving changes
s create a new empty Sun disklabel
t change a partition's system id
u change display/entry units
v verify the partition table
w write table to disk and exit
x extra functionality (experts only)
Command (m for help): n 添加分区
Command action
e extended
p primary partition (1-4)
p 添加主分区
Partition number (1-4): 1
First cylinder (1-2610, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-2610, default 2610):
Using default value 2610
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
格式化硬盘
[root@lmap ~]# mkfs -t ext3 /dev/sdb1
mke2fs 1.39 (29-May-2006)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
2621440 inodes, 5241198 blocks
262059 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=0
160 block groups
32768 blocks per group, 32768 fragments per group
16384 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 29 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
创建mount目录
mkdir -p /mnt/CentOS01
mout到指定的目录
mount /dev/sdb1 /mnt/centos01
修改/etc/fstab文件，每次开机自动加载
vi /etc/fstab
/dev/sdb1 /mnt/centos01 ext3 defaults 1 1
查看
[root@lmap ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
18156292 2574216 14644912 15% /
/dev/sda1 101086 18382 77485 20% /boot
tmpfs 517552 0 517552 0% /dev/shm
/dev/sdb1 20635700 176200 19411264 1% /mnt/centos01
关于去除硬盘，修改/etc/fstab文件，删除相关内容
删除硬盘后如果不去掉/etc/fstab文件中的
/dev/sdb1 /mnt/centos01 ext3 defaults 1 1
重启后会出现
Give root password for maintenance
(or type Control-D to continue):
解决办法：
这是所有的文件系统是只读的，输入root密码后，使用这个命令
#mount -o remount,rw /
然后去掉/etc/fstab文件中的
/dev/sdb1 /mnt/centos01 ext3 defaults 1 1
reboot