Linux fdisk命令

Linux 教程 · 2019-02-15 17:57:20

Linux fdisk是一个创建和维护分区表的程序,它兼容DOS类型的分区表、BSD或者SUN类型的磁盘列表。

语法

fdisk [必要参数][选择参数]

必要参数:

  • -l 列出素所有分区表
  • -u 与"-l"搭配使用,显示分区数目

选择参数:

  • -s 指定分区
  • -v 版本信息

码单操作说明

  • m :显示码单和帮助信息
  • a :活动分区标记/引导分区
  • d :删除分区
  • l :显示分区类型
  • n :新建分区
  • p :显示分区信息
  • q :退出不保存
  • t :设置分区号
  • v :进行分区检查
  • w :保存修改
  • x :扩展应用,高级功能

实例

显示当前分区情况:

# fdisk -l

Disk /dev/sda: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

  Device Boot   Start     End   Blocks  Id System
/dev/sda1  *      1     13   104391  83 Linux
/dev/sda2       14    1305  10377990  8e Linux LVM

Disk /dev/sdb: 5368 MB, 5368709120 bytes
255 heads, 63 sectors/track, 652 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/sdb doesn't contain a valid partition table

显示SCSI硬盘的每个分区情况

# fdisk -lu  

Disk /dev/sda: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders, total 20971520 sectors
Units = sectors of 1 * 512 = 512 bytes

  Device Boot   Start     End   Blocks  Id System
/dev/sda1  *     63   208844   104391  83 Linux
/dev/sda2     208845  20964824  10377990  8e Linux LVM

Disk /dev/sdb: 5368 MB, 5368709120 bytes
255 heads, 63 sectors/track, 652 cylinders, total 10485760 sectors
Units = sectors of 1 * 512 = 512 bytes

Disk /dev/sdb doesn't contain a valid partition table

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