上一篇是只有一个分区，这下我创建三个分区。操作如下：：：
首先，如果挂载过了，要先卸载 ＃sudo umount /... 后面就是挂载的地方了。我没有挂载，所以就不用卸载了。
／＊此为注释部分，也就是说不重要的地方，有上一篇说过的。可以略过不看。 蓝色为主要部分
hua@hua-desktop:~$ sudo fdisk -l /dev/sdb ＃查看
[sudo] password for hua:
Disk /dev/sdb: 254 MB, 254279680 bytes
8 heads, 61 sectors/track, 1017 cylinders
Units = cylinders of 488 * 512 = 249856 bytes
Sector size (logical / optimal IO): 512 bytes / 512 bytes
Disk identifier: 0x00015b81
Device Boot Start End Blocks Id System ＃原来的三个分区
/dev/sdb1 201 700 122000 83 Linux
/dev/sdb2 * 701 1017 77348 83 Linux
/dev/sdb3 1 200 48769+ 83 Linux
Partition table entries are not in disk order
hua@hua-desktop:~$ sudo fdisk /dev/sdb ＃格Ｕ盘
Command (m for help): m ＃命令如上一篇里面介绍。主要是删除（d)和添加(n,p Num),写(w)
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 (m for help): d #删除分区
Partition number (1-4): 1 ＃删除第一分区。我一共有三个分区嘛。
Command (m for help): d
Partition number (1-4): 2
Command (m for help): d
Selected partition 3
Command (m for help): 3 ＃已经删除过了，
3: unknown command
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 (m for help): p ＃查看
Disk /dev/sdb: 254 MB, 254279680 bytes
8 heads, 61 sectors/track, 1017 cylinders
Units = cylinders of 488 * 512 = 249856 bytes
Sector size (logical / optimal IO): 512 bytes / 512 bytes
Disk identifier: 0x00015b81
Device Boot Start End Blocks Id System
Command (m for help): n ＃添加一个分区
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-1017, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-1017, default 1017):
Using default value 1017 ＃默认，就是从1－1017都算上，就只有一个了。
Command (m for help): p
Disk /dev/sdb: 254 MB, 254279680 bytes
8 heads, 61 sectors/track, 1017 cylinders
Units = cylinders of 488 * 512 = 249856 bytes
Sector size (logical / optimal IO): 512 bytes / 512 bytes
Disk identifier: 0x00015b81
Device Boot Start End Blocks Id System
/dev/sdb1 1 1017 248117+ 83 Linux
Command (m for help): q ＃我直接退出了，这样就没有写操作，是不成功的，也就是说刚才的操作不成功。
hua@hua-desktop:~$ sudo fdisk /dev/sdb ＃查看一下，果然没有变。下面格成三个分区。
Command (m for help): p ＃杳看。
Disk /dev/sdb: 254 MB, 254279680 bytes
8 heads, 61 sectors/track, 1017 cylinders
Units = cylinders of 488 * 512 = 249856 bytes
Sector size (logical / optimal IO): 512 bytes / 512 bytes
Disk identifier: 0x00015b81
Device Boot Start End Blocks Id System
/dev/sdb1 201 700 122000 83 Linux
/dev/sdb2 * 701 1017 77348 83 Linux
/dev/sdb3 1 200 48769+ 83 Linux
Partition table entries are not in disk order
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 (m for help): d ＃删除1
Partition number (1-4): 1
Command (m for help): d ＃删除2
Partition number (1-4): 2
Command (m for help): d ＃删除3
Selected partition 3
Command (m for help): p #查看。
Disk /dev/sdb: 254 MB, 254279680 bytes
8 heads, 61 sectors/track, 1017 cylinders
Units = cylinders of 488 * 512 = 249856 bytes
Sector size (logical / optimal IO): 512 bytes / 512 bytes
Disk identifier: 0x00015b81
Device Boot Start End Blocks Id System ＃都没有了。
Command (m for help): n ＃添加分区
Command action
e extended ＃扩展分区
p primary partition (1-4) ＃主分区
p ＃先添加主分区
Partition number (1-4): 1 ＃主分区号 。。。选1就是 /dev/sd1
First cylinder (1-1017, default 1): #输入1，或者是默认 （cylinder是圆柱体，这里面应该是磁道数吧。）
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-1017, default 1017):
Using default value 1017
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
hua@hua-desktop:~$ sudo mount /dev/sdb1 /media/floppy0/
hua@hua-desktop:~$ ls
examples.desktop 公共的 视频 文档 音乐
Pupp汉化.doc 模板 图片 下载 桌面
hua@hua-desktop:~$ sudo mou
mount mount.fuse mount.ntfs-3g mountpoint
mountall mount.ntfs mount.ntfs-fuse mousetweaks
hua@hua-desktop:~$ sudo mount /dev/sdb
sdb sdb1
hua@hua-desktop:~$ fdisk /dev/sdb
Unable to open /dev/sdb
hua@hua-desktop:~$ sudo fdisk /dev/sdb
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 (m for help): p
Disk /dev/sdb: 254 MB, 254279680 bytes
8 heads, 61 sectors/track, 1017 cylinders
Units = cylinders of 488 * 512 = 249856 bytes
Sector size (logical / optimal IO): 512 bytes / 512 bytes
Disk identifier: 0x00015b81
Device Boot Start End Blocks Id System
/dev/sdb1 1 1017 248117+ 83 Linux
Command (m for help): d
Selected partition 1
Command (m for help): a
Partition number (1-4): q^C
hua@hua-desktop:~$ fdisk /dev/sdb
Unable to open /dev/sdb
hua@hua-desktop:~$ sudo fdisk /dev/sdb
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 (m for help): p
Disk /dev/sdb: 254 MB, 254279680 bytes
8 heads, 61 sectors/track, 1017 cylinders
Units = cylinders of 488 * 512 = 249856 bytes
Sector size (logical / optimal IO): 512 bytes / 512 bytes
Disk identifier: 0x00015b81
Device Boot Start End Blocks Id System
/dev/sdb1 1 1017 248117+ 83 Linux
Command (m for help): d
Selected partition 1
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-1017, default 1): 1
Last cylinder, +cylinders or +size{K,M,G} (1-1017, default 1017): 1017
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
hua@hua-desktop:~$ sudo mkfs.ext3 /dev/sdb
mke2fs 1.41.10 (10-Feb-2009)
/dev/sdb is entire device, not just one partition!
无论如何也要继续? (y,n) n
hua@hua-desktop:~$ sudo mkfs.ext3 /dev/sdb1
mke2fs 1.41.10 (10-Feb-2009)
文件系统标签=
操作系统:Linux
块大小=1024 (log=0)
分块大小=1024 (log=0)
Stride=0 blocks, Stripe width=0 blocks
62248 inodes, 248116 blocks
12405 blocks (5.00%) reserved for the super user
第一个数据块=1
Maximum filesystem blocks=67371008
31 block groups
8192 blocks per group, 8192 fragments per group
2008 inodes per group
Superblock backups stored on blocks:
8193, 24577, 40961, 57345, 73729, 204801, 221185
正在写入inode表: 完成
Creating journal (4096 blocks): 完成
Writing superblocks and filesystem accounting information: 完成
This filesystem will be automatically checked every 20 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
hua@hua-desktop:~$ ls
examples.desktop 公共的 视频 文档 音乐
Pupp汉化.doc 模板 图片 下载 桌面
hua@hua-desktop:~$ cls
No command 'cls' found, but there are 19 similar ones
cls: command not found
hua@hua-desktop:~$ clear
hua@hua-desktop:~$ sudo fidsk /dev/sdb
[sudo] password for hua:
hua@hua-desktop:~$ umount /media/
/media/Core /media/Study
hua@hua-desktop:~$ clear
到这里都是没有多大用处的，我用颜色注释一下。
＊／
hua@hua-desktop:~$ sudo umount /media/ #先卸载U盘
Core/ Study/
hua@hua-desktop:~$ sudo umount /media/Core/
[sudo] password for hua:
hua@hua-desktop:~$ sudo fdisk /dev/sdb ＃操作开始
Command (m for help): m ＃内容见上一篇
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 (m for help): p ＃查看
Disk /dev/sdb: 254 MB, 254279680 bytes
8 heads, 61 sectors/track, 1017 cylinders
Units = cylinders of 488 * 512 = 249856 bytes
Sector size (logical / optimal IO): 512 bytes / 512 bytes
Disk identifier: 0x00015b81
Device Boot Start End Blocks Id System ＃只有一个分区
/dev/sdb1 1 1017 248117+ 83 Linux
Command (m for help): d ＃删除那一个分区
Selected partition 1
Command (m for help): p ＃看一下，什么都没有了。
Disk /dev/sdb: 254 MB, 254279680 bytes
8 heads, 61 sectors/track, 1017 cylinders
Units = cylinders of 488 * 512 = 249856 bytes
Sector size (logical / optimal IO): 512 bytes / 512 bytes
Disk identifier: 0x00015b81
Device Boot Start End Blocks Id System
Command (m for help): n ＃添加分区
Command action
e extended ＃＃扩展分区
p primary partition (1-4) ＃主分区
p ＃选加主分区
Partition number (1-4): 1 ＃选１，相当于是/dev/sdb1
First cylinder (1-1017, default 1): 1 ＃选１，这是从第一个柱面开始，默认也可
Last cylinder, +cylinders or +size{K,M,G} (1-1017, default 1017): 200 ＃默认１０１７，当然不能默认，我选２００
Command (m for help): p ＃再查看一下。多了一个分区
Disk /dev/sdb: 254 MB, 254279680 bytes
8 heads, 61 sectors/track, 1017 cylinders
Units = cylinders of 488 * 512 = 249856 bytes
Sector size (logical / optimal IO): 512 bytes / 512 bytes
Disk identifier: 0x00015b81
Device Boot Start End Blocks Id System
/dev/sdb1 1 200 48769+ 83 Linux
Command (m for help): n ＃继续添加
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 2
First cylinder (201-1017, default 201):
Using default value 201
Last cylinder, +cylinders or +size{K,M,G} (201-1017, default 1017): 500
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 3
First cylinder (501-1017, default 501):
Using default value 501
Last cylinder, +cylinders or +size{K,M,G} (501-1017, default 1017):
Using default value 1017
Command (m for help): p ＃都添加好了。查看一下
Disk /dev/sdb: 254 MB, 254279680 bytes
8 heads, 61 sectors/track, 1017 cylinders
Units = cylinders of 488 * 512 = 249856 bytes
Sector size (logical / optimal IO): 512 bytes / 512 bytes
Disk identifier: 0x00015b81
Device Boot Start End Blocks Id System ＃ＯＫ
，有三个。格式是linux 系统的
/dev/sdb1 1 200 48769+ 83 Linux
/dev/sdb2 201 500 73200 83 Linux
/dev/sdb3 501 1017 126148 83 Linux
Command (m for help): w ＃写入，非常的重要，没有这步相当于做梦一声。
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
最后是格式化：
sudo mkfs.ext3
/dev/sdb1 #格成ext3的，要多一个文件吧。
sudo mkfs.vfat -F
32 -n disk /dev/sdb1 #通用的格式
其实不用格式化也可以挂载。挂载后再格式化也可以。好了，就这么多了。
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