linux磁盘分区管理，mysql数据库引擎面试

Be careful before using the write command.

Device does not contain a recognized partition table

Building a new DOS disklabel with disk identifier 0x529a757c.

Command (m for help): m 打印帮助菜单

Command action

a toggle a bootable flag

b edit bsd disklabel

c toggle the dos compatibility flag

d delete a partition

g create a new empty GPT partition table

G create an IRIX (SGI) partition table

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 添加一个新分区

Partition type:

p primary (0 primary, 0 extended, 4 free)

e extended

Select (default p): p 选择主分区

Partition number (1-4, default 1): 1 编号

First sector (2048-41943039, default 2048):

Using default value 2048

Last sector, +sectors or +size{K,M,G} (2048-41943039, default 41943039): +1G 分区大小1G

Partition 1 of type Linux and of size 1 GiB is set

Command (m for help): w 保存退出

The partition table has been altered!

Calling ioctl() to re-read partition table.

Syncing disks.

如果创建出错了，可以按 d 删除错误分区

• 刷新磁盘，查看以分区的情况

[root@localhost ~]# partprobe

[root@localhost ~]# fdisk -l|tail -10

Disk identifier: 0x529a757c

Device Boot Start End Blocks Id System

/dev/sdb1 2048 2099199 1048576 83