以腾讯云Centos系统服务器为例，小记的是数据盘不在本地，大小为20G，以下的教程来自小夕博客的一篇相关添加教程的修改，适合腾讯云Linux Centos系统.说明：参数也许不对，我没有截图了，但所有命令均已修改，直接复制就行。
通过fdisk -l我们可以看到/dev/vdb(此名称因系统而异)容量有20G，而且没有分区，接下来我们对它进行分区和挂载
fdisk -l
[root@MyVPS ~ ]# fdisk -l
Disk /dev/vda: 8589 MB, 8589901824 bytes255 heads, 63 sectors/track, 1044 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0xcd6e8236
Device Boot Start End Blocks Id System/dev/vda1 * 1 1044 8385898+ 83 LinuxNote: sector size is 4096 (not 512)
Disk /dev/vdb: 21.5 GB, 21474836480 bytes16 heads, 56 sectors/track, 5851 cylindersUnits = cylinders of 896 * 4096 = 3670016 bytesSector size (logical/physical): 4096 bytes / 4096 bytesI/O size (minimum/optimal): 4096 bytes / 4096 bytesDisk identifier: 0x5c9ffc78
Device Boot Start End Blocks Id System/dev/vdb1 1 5851 20969760 83 Linux
对/dev/vdb(此名称因系统而异)进行分区：
fdisk /dev/vdb
[root@MyVPS ~]# fdisk /dev/vdb
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 **ps 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 （输入n新建分区）
Command action
e extended
p primary partition (1-4)
p （输入P选择分区类型）
/dev/vdb中第1个分区
Partition number (1-4): 1 （输入1或者默认回车）
First cylinder (1-2871, default 1): （输入1或者默认回车）
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.
将新分区vdb1(此名称因系统而异)格式化为ext3格式
mkfs -t ext3 /dev/vdb1
[root@MyVPS ~]# mkfs -t ext3 /dev/vdb1
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.
我们示范将新分区vdb1挂载到目录/home1
新建目录/home1，然后挂载
mkdir /home1
mount /dev/vdb1 /home1
完成后我们通过df -hal可以看到，新分区已经挂载到目录/home1上了
[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/vda1 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/vdb1 22G 173M 21G 1% /home1
最后添加开机自动挂载：
echo “/dev/vdb1 /home1 ext3 defaults 1 0″ >> /etc/fstab
这样就完成了！
通过面板重装后的处理
重新建立目录/home1，然后重新挂载，xvdb1的文件内容不受影响
mkdir /home1
mount /dev/vdb1 /home1
最后，重新添加自动挂载即可：
echo “/dev/vdb1 /home1 ext3 defaults 1 0″ >> /etc/fs