查看硬盘信息
fdisk -l //执行查看命令
命令执行完后会输入类似下面的信息,找到需要增加的硬盘盘符,例如/dev/sda
Disk /dev/xvda: 75.2 GB,75161927680 bytes
255 heads,63 sectors/track,9137 cylinders,total 146800640 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/xvda1 * 16065 146785904 73384920 83 Linux
Disk /dev/xvdf: 53.7 GB,53687091200 bytes
255 heads,6527 cylinders,total 104857600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/xvdf doesn't contain a valid partition table
硬盘设置
sudo fdisk /dev/xvdf
执行命令后,按如下顺序进行设置(Step 14)
Command (m for help): m <enter>
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)
// Step 1
Command (m for help):n <enter>
Command action
e extended
p primary partition (1-4)
// Step 2
p <enter>
Partition number (1-4):
// Step 3
1 <enter>
// Step 4
Command (m for help):w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
格式化
sudo mke2fs -j /dev/xvdf
修改保留空间
sudo tune2fs -m 1 /dev/xvdf
设置挂载点
新建文件夹(挂载点)
sudo mkdir /Backup
挂载(临时)
sudo mount /dev/xvdf /Backup
设置启动挂载
查看磁盘UUID
ls -l /dev/disk/by-uuid
备份配置文件(切记,一定要备份后再进行操作)
sudo cp /etc/fstab /etc/fstab_bk
将对应的UUID(例如/dev/sda)添加到配置文件中,例如:
UUID=3820aaf5-a60e-4da8-b883-7d789482983f 挂载点 ext4 defaults
重启后即可看到新挂载的硬盘
df -h
