磁盘管理
关于磁盘分区我就不再详细说明，大家都该会的吧？原始概念中一张磁盘最多能分4个主分区，由于电脑进步神速，所以4个分区已经无法满足用户，所以出现了扩展分区，扩展分区里又可分多个逻辑分区（不知道逻辑分区或是什么分区。。。）
LINUX中的分区
swap分区：系统标识为82，就和WINDOWS里的虚拟内存大致一样。
boot分区：此地方存放着系统内核。
根分区/： 和WINDOWS的C盘差不多，存放系统文件，所以越大越好。
fdisk 磁盘分区工具简介
fdisk -l [-b SSZ] [-u] DISK List partition table(s) 显示当前设备分区列表
fdisk -s PARTITION Give partition size(s) in blocks 显示指定分区大小
fdisk -v Give fdisk version 显示fdisk版本
fdisk -s PARTITION Give partition size(s) in blocks 显示指定分区大小
fdisk -v Give fdisk version 显示fdisk版本
使用fdisk 设备名 会进入分区管理交互模式
其中指令
m指令 fdisk将显示所有的指令列表
[root@123t ]# fdisk /dev/hda
The number of cylinders for this disk is set to 9729.
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)
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)
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
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 verify the partition table
w write table to disk and exit
x extra functionality (experts only)
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
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 verify the partition table
w write table to disk and exit
x extra functionality (experts only)
p指令 列出当前/dev/sda设备上的分区信息
Command (m for help): p
Disk /dev/hda: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 1 13 104391 83 Linux
/dev/hda2 14 9729 78043770 8e Linux LVM
/dev/hda1 * 1 13 104391 83 Linux
/dev/hda2 14 9729 78043770 8e Linux LVM
u指令 以扇区为单位进行显示
d指令 删除指定分区
d指令 删除指定分区
n指令 创建一个新分区
t指令 对新建的分区系统默认类型为83，就是LINUX分区，若要分成其它类型的分区。使用此参数 （这个你们自己试哈）
其实大可不必这么麻烦 用第三方软件多方便啊
