语法：
fdisk [-l] 装置名称
选项与参数：
- -l ：输出后面接的装置所有的分区内容。若仅有 fdisk -l 时， 则系统将会把整个系统内能够搜寻到的装置的分区均列出来。
实例
列出所有分区信息
1 [root@AY120919111755c246621 tmp]# fdisk -l 2 3 Disk /dev/xvda: 21.5 GB, 21474836480 bytes 4 255 heads, 63 sectors/track, 2610 cylinders 5 Units = cylinders of 16065 * 512 = 8225280 bytes 6 Sector size (logical/physical): 512 bytes / 512 bytes 7 I/O size (minimum/optimal): 512 bytes / 512 bytes 8 Disk identifier: 0x00000000 9 10 Device Boot Start End Blocks Id System 11 /dev/xvda1 * 1 2550 20480000 83 Linux 12 /dev/xvda2 2550 2611 490496 82 Linux swap / Solaris 13 14 Disk /dev/xvdb: 21.5 GB, 21474836480 bytes 15 255 heads, 63 sectors/track, 2610 cylinders 16 Units = cylinders of 16065 * 512 = 8225280 bytes 17 Sector size (logical/physical): 512 bytes / 512 bytes 18 I/O size (minimum/optimal): 512 bytes / 512 bytes 19 Disk identifier: 0x56f40944 20 21 Device Boot Start End Blocks Id System 22 /dev/xvdb2 1 2610 20964793+ 83 Linux
找出你系统中的根目录所在磁盘，并查阅该硬盘内的相关信息
1 [root@www ~]# df / <==注意：重点在找出磁盘文件名而已 2 Filesystem 1K-blocks Used Available Use% Mounted on 3 /dev/hdc2 9920624 3823168 5585388 41% / 4 5 [root@www ~]# fdisk /dev/hdc <==仔细看，不要加上数字喔！ 6 The number of cylinders for this disk is set to 5005. 7 There is nothing wrong with that, but this is larger than 1024, 8 and could in certain setups cause problems with: 9 1) software that runs at boot time (e.g., old versions of LILO) 10 2) booting and partitioning software from other OSs 11 (e.g., DOS FDISK, OS/2 FDISK) 12 13 Command (m for help): <==等待你的输入！
输入 m 后，就会看到底下这些命令介绍
1 Command (m for help): m <== 输入 m 后，就会看到底下这些命令介绍 2 Command action 3 a toggle a bootable flag 4 b edit bsd disklabel 5 c toggle the dos compatibility flag 6 d delete a partition <==删除一个partition 7 l list known partition types 列出分区信息 8 m print this menu 打印分区 9 n add a new partition <==新增一个partition 10 o create a new empty DOS partition table 11 p print the partition table <==在屏幕上显示分割表 12 q quit without saving changes <==不储存离开fdisk程序 13 s create a new empty Sun disklabel 14 t change a partition's system id 15 u change display/entry units 16 v verify the partition table 17 w write table to disk and exit <==将刚刚的动作写入分割表 18 x extra functionality (experts only)
离开 fdisk 时按下 q，那么所有的动作都不会生效！相反的， 按下w就是动作生效的意思。
1 Command (m for help): p <== 这里可以输出目前磁盘的状态 2 3 Disk /dev/hdc: 41.1 GB, 41174138880 bytes <==这个磁盘的文件名与容量 4 255 heads, 63 sectors/track, 5005 cylinders <==磁头、扇区与磁柱大小 5 Units = cylinders of 16065 * 512 = 8225280 bytes <==每个磁柱的大小 6 7 Device Boot Start End Blocks Id System 8 /dev/hdc1 * 1 13 104391 83 Linux 9 /dev/hdc2 14 1288 10241437+ 83 Linux 10 /dev/hdc3 1289 1925 5116702+ 83 Linux 11 /dev/hdc4 1926 5005 24740100 5 Extended 12 /dev/hdc5 1926 2052 1020096 82 Linux swap / Solaris 13 # 装置文件名 启动区否 开始磁柱 结束磁柱 1K大小容量 磁盘分区槽内的系统 14 15 Command (m for help): q
想要不储存离开吗？按下 q 就对了！不要随便按 w 啊！
使用 p 可以列出目前这颗磁盘的分割表信息，这个信息的上半部在显示整体磁盘的状态。