linux安装建立的分区

# 启动fdisk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 (container for logical partitions)
Select (default p): p
Partition number (1-4, default 1): 1
First sector (2048-20971519, default 2048): 
Last sector, +sectors or +size{K,M,G,T,P} (2048-20971519, default 20971519): 

# 创建扩展分区
Command (m for help): n
Partition type:
   p   primary (1 primary, 0 extended, 3 free)
   e   extended (container for logical partitions)
Select (default e): e
Partition number (2-4, default 2): 
First sector (524288-20971519, default 524288): 
Last sector, +sectors or +size{K,M,G,T,P} (524288-20971519, default 20971519): 

# 创建逻辑分区
Command (m for help): n
All space for primary partitions is in use.
Adding logical partition 5
First sector (526336-20971519, default 526336): 
Last sector, +sectors or +size{K,M,G,T,P} (526336-20971519, default 20971519): 

# 保存并退出
Command (m for help): w