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NAME
fdisk - Partition table manipulator for Linux
SYNOPSIS
fdisk [-uc] [-b sectorsize] [-C cyls] [-H heads] [-S sects]
device
fdisk -l [-u] [device...] 列出指定的外圍設備的分區表狀況。
[root@nginx ~]# fdisk -l
Disk /dev/sda: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 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: 0x000a87b0
Device Boot Start End Blocks Id System
/dev/sda1 * 1 64 512000 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 64 141 614400 82 Linux swap / Solaris
Partition 2 does not end on cylinder boundary.
/dev/sda3 141 1306 9358336 83 Linux
[root@nginx ~]#
fdisk -s partition... <分區編號> 將指定的分區大小輸出到標準輸出上,單位爲區塊。
fdisk -v 顯示版本信息。
fdisk -h
一、分區要點
(1)任意多個主分區,但要求(1<=主分區<=小於等於4。 例如,4個主分區,3個主分區 2個主分區 或一個主分區)
(2)擴展分區和主分區, 3個主分區+一個擴展分區 1<=主分區<=小於等於4 例如:3個主分區+1個擴展分區 或兩個主分區+1個擴展分區 1個主+1個擴展分區
(3)如果磁盤分成4個磁盤分區,那麼一般會用: P+P+P+P P+P+P+E
二、[root@nginx-master opt]# fdisk --help 查看分區幫助
[root@nginx-master opt]# fdisk -l 查看分區列表
1.[root@nginx-master opt]# fdisk /dev/sda
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
Command action
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition
l list known partition types 查看分區
m print this menu 幫助信息
n add a new partition 新建分區
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 verify the partition table
w write table to disk and exit
x extra functionality (experts only)
Command (m for help):
2. n 新建分區
e extended
p primary partition(1-4)
3.w 分區完成後w保存
4.[root@nginx-master opt]# partprobe
5.[root@nginx-master opt]# mkfs.ext4 /dev/sda
4.寫入 fs /etc/fstab