[root@localhost ~]# fdisk ~l
#列出系统分区
[root@localhost ~]# fdisk 设备文件名
#给硬盘分区
[root@localhost ~]# fdisk -l
#查询本机可以识别的硬盘和分区
Disk /dev/sda:32.2 GB, 32212254720 bytes
#硬盘文件名和硬盘大小
255 heads, 63 sectors/track, 3916 cylinders
#共255个磁头、63个扇区和3916个柱面
Units = cylinders of 16065 *512 = 8225280 bytes
#每个柱面的大小
Sector size (logical/physical): 512 bytes/512 bytes
#每个扇区的大小
I/O size (minimum/optimal): 512 bytes/512 bytes
Disk identifier: 0x0009e098
Device Boot Start End Blocks ld System
/dev/sda1 * 1 26 204800 83 Linux
Partition 1 does not end on cylinder boundary.
#分区1没有占满硬盘
/dev/sda2 26 281 2048000 82 Linux swap / Solaris
Partition 2 does not end on cylinder boundary
#分区2没有占满硬盘
/dev/sda3 281 3917 29203456 83 Linux
#设备文件名启动分区 起始柱面 终止柱面容量 ID 系统
Disk /dev/sdb: 21.5 GB, 21474836480 bytes #第二个硬盘识别,这个硬盘的大小
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes/512 bytes Disk identifier: 0x00000000
[root@localhost ~]# fdisk /dev/sdb
#给/dev/sdb分区
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0xed7e8bc7.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
WARNING: DOS-compatible mode is deprecated.it's strongly recommended to switch off the mode (command 'c') and change display units to sectors (command 'u').
Command (m for help):m
#交互界面的等待输入指令的位置,输入 m 得到帮助
Command action
#可用指令
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition
I list known partition types m print this menu
n add a new partition
o create a new empty DOS partition table
p print the partition table
q quit without saving changes
s create a new empty Sun disklabel
t change a partition's system id
u change display/entry units
v verity the partition table
w write table to disk and exit
x extra functionality (experts only)
命令 | 说 明 |
---|---|
a | 设置可引导标记 |
b | 编辑 bsd 磁盘标签 |
c | 设置 DOS 操作系统兼容标记 |
d | 删除一个分区 |
1 | 显示已知的文件系统类型。82 为 Linux swap 分区,83 为 Linux 分区 |
m | 显示帮助菜单 |
n | 新建分区 |
0 | 建立空白 DOS 分区表 |
P | 显示分区列表 |
q | 不保存退出 |
s | 新建空白 SUN 磁盘标签 |
t | 改变一个分区的系统 ID |
u | 改变显示记录单位 |
V | 验证分区表 |
w | 保存退出 |
X | 附加功能(仅专家) |
本文链接:http://task.lmcjl.com/news/4413.html