linux 初始化磁盘

# 打开磁盘分区工具
sudo fdisk /dev/sdb

# 创建主分区
Command (m for help): n
Partition type:
   p   primary (0 primary, 0 extended, 4 free)
   e   extended
Select (default p): p
Partition number (1-4, default 1): 1
First sector (2048-20971519, default 2048): 
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-20971519, default 20971519): 
Using default value 20971519

# 创建扩展分区
Command (m for help): n
Partition type:
   p   primary (1 primary, 0 extended, 3 free)
   e   extended
Select (default p): e
Partition number (2-4, default 2): 2
First sector (20973568-20971519, default 20973568): 
Using default value 20973568
Last sector, +sectors or +size{K,M,G} (20973568-20971519, default 20971519): 
Using default value 20971519

# 创建逻辑分区
Command (m for help): n
Partition type:
   p   primary (1 primary, 1 extended, 2 free)
   l   logical (5 or over)
Select (default p): l
Adding logical partition 5
First sector (20975520-20971519, default 20975520): 
Using default value 20975520
Last sector, +sectors or +size{K,M,G} (20975520-20971519, default 20971519): 
Using default value 20971519

# 保存并退出
Command (m for help): w