linux fdisk磁盘分区

fdisk [-l] 装置名称

-l 输出后面接的装置所有partion内容

[root@localhost ~]# fdisk /dev/sda2

Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel

Building a new DOS disklabel. Changes will remain in memory only,

until you decide to write them. After that, of course, the previous

content won't be recoverable.

The number of cylinders for this disk is set to 1945.

There is nothing wrong with that, but this is larger than 1024,

and could in certain setups cause problems with:

1) software that runs at boot time (e.g., old versions of LILO)

2) booting and partitioning software from other OSs

   (e.g., DOS FDISK, OS/2 FDISK)

Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

Command (m for help): m   输入m查看指令

Command action

   a   toggle a bootable flag

   b   edit bsd disklabel

   c   toggle the dos compatibility flag

   d   delete a partition   删除一个partion

   l   list known partition types

   m   print this menu

   n   add a new partition  新增一个partion

   o   create a new empty DOS partition table

   p   print the partition table   显示分割表

   q   quit without saving changes 不存储离开fdisk模式

   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  将刚才的操作保存

   x   extra functionality (experts only)