centos 系统如何挂载识别新硬盘?

fdisk -l

 [root@MyVPS ~]# fdisk -l
 Disk /dev/xvda: 8589 MB, 8589934592 bytes
 255 heads, 63 sectors/track, 1044 cylinders
 Units = cylinders of 16065 * 512 = 8225280 bytes
 Device Boot Start End Blocks Id System
 /dev/xvda1 * 1 13 104391 83 Linux
 /dev/xvda2 14 1044 8281507+ 8e Linux LVM
 Disk /dev/xvdb: 23.6 GB, 23622320128 bytes
 255 heads, 63 sectors/track, 2871 cylinders
 Units = cylinders of 16065 * 512 = 8225280 bytes
 Device Boot Start End Blocks Id System

fdisk /dev/sdb

 [root@MyVPS ~]# fdisk /dev/sdb
 The number of cylinders for this disk is set to 2871.
 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)
 输入n新建分区
 Command (m for help): n
 Command action
 e extended
 p primary partition (1-4)
 p
 /dev/xvdb中第1个分区
 Partition number (1-4): 1
 First cylinder (1-2871, default 1):
 Using default value 1
 Last cylinder or +size or +sizeM or +sizeK (1-2871, default 2871):
 Using default value 2871
 输入W保存退出
 Command (m for help): w
 The partition table has been altered!
 Calling ioctl() to re-read partition table.
 Syncing disks.

mkfs -t ext3 /dev/sdb1

 [root@MyVPS ~]# 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)
 2883584 inodes, 5765319 blocks
 288265 blocks (5.00%) reserved for the super user
 First data block=0
 Maximum filesystem blocks=4294967296
 176 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 24 mounts or
 180 days, whichever comes first. Use tune2fs -c or -i to override.

mount /dev/sdb1 /home

 [root@MyVPS ~]# mount /dev/sdb1 /home

mkdir /home1
mount /dev/xvdb1 /home1

df -hal

 [root@MyVPS ~]# df -hal
 Filesystem Size Used Avail Use% Mounted on
 /dev/mapper/VolGroup00-LogVol00
 5.7G 1.4G 4.1G 25% /
 proc 0 0 0 - /proc
 sysfs 0 0 0 - /sys
 devpts 0 0 0 - /dev/pts
 /dev/xvda1 99M 28M 67M 30% /boot
 tmpfs 256M 0 256M 0% /dev/shm
 none 0 0 0 - /proc/sys/fs/binfmt_misc
 sunrpc 0 0 0 - /var/lib/nfs/rpc_pipefs
 /dev/xvdb1 22G 173M 21G 1% /home

echo "/dev/sdb1 /home ext3 defaults 1 2" >> /etc/fstab

 [root@MyVPS ~]# mkdir /home
 [root@MyVPS ~]# mount /dev/sdb1 /home
 [root@MyVPS ~]# echo "/dev/sdb1 /home ext3 defaults 1 2" >> /etc/fstab