linux安装如何分区

# 启动fdisk工具
sudo fdisk /dev/sda

# 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): +500M

# 创建交换分区
Command (m for help): n
Partition type:
   p   primary (1 primary, 0 extended, 3 free)
   e   extended
Select (default p): p
Partition number (2-4, default 2): 
First sector (1048576-20971519, default 1048576): 
Using default value 1048576
Last sector, +sectors or +size{K,M,G} (1048576-20971519, default 20971519): +2G

# 创建根分区
Command (m for help): n
Partition type:
   p   primary (2 primary, 0 extended, 2 free)
   e   extended
Select (default p): p
Partition number (3-4, default 3): 
First sector (3145728-20971519, default 3145728): 
Using default value 3145728
Last sector, +sectors or +size{K,M,G} (3145728-20971519, default 20971519): 

# 写入分区表并退出
Command (m for help): w