Ubuntu下格式化并分区u盘

1.命令行

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sudo fdisk -l

查看你的设备的符号，显示结果通常如下：

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Disk /dev/sda: 500.1 GB, 500107862016 bytes

255 heads, 63 sectors/track, 60801 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: 0x000c4c5b

Device Boot Start End Blocks Id System

/dev/sda1 * 1 60065 482466816 83 Linux

/dev/sda2 60065 60802 5917697 5 Extended

/dev/sda5 60065 60802 5917696 82 Linux swap / Solaris

Disk /dev/sdb: 1954 MB, 1954545664 bytes

255 heads, 63 sectors/track, 237 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: 0x00069760

找到你的设备的盘符，我的是 /dev/sdb

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sudo umount /dev/sdb

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sudo fdisk /dev/sdb

在终端显示内容如下：

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Command (m for help):

输入m得到帮助信息：

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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)

开始分区
如果你的设备已经有分区，先删除你的分区：

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Command (m for help): d 删除命令

Partition number (1-4): 1 删除地几个分区

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如果有多个分区，接着执行命令d，输入分区号

创建新分区：

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Command (m for help): n 创建分区命令

Command action

e extended

p primary partition (1-4)

p 选择分区的类型 e:扩展分区 p:主分区

Partition number (1-4): 1 分区号 1：第一个分区

First cylinder (1-237, default 1): 1

Last cylinder, +cylinders or +size{K,M,G} (1-237, default 237): +512M 分区的大小

创建第二个分区：同上

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Command (m for help): n

Command action

e extended

p primary partition (1-4)

p

Partition number (1-4): 2

First cylinder (67-237, default 67):

Using default value 67

Last cylinder, +cylinders or +size{K,M,G} (67-237, default 237): +512M

把第一个分区做为FAT32d 分区：

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Command (m for help): t 改变分区的id

Partition number (1-4): 1 改变第一个分区

Hex code (type L to list codes): c 变为dos兼容的格式

Changed system type of partition 1 to c (W95 FAT32 (LBA))

查看分区情况：

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Command (m for help): p

Disk /dev/sdb: 1954 MB, 1954545664 bytes

255 heads, 63 sectors/track, 237 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: 0x00069760

Device Boot Start End Blocks Id System

/dev/sdb1 1 66 530113+ c W95 FAT32 (LBA)

/dev/sdb2 67 132 530145 83 Linux

保存写入上面的内容：

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Command (m for help): w

The partition table has been altered!

Calling ioctl() to re-read partition table.

WARNING: Re-reading the partition table failed with error 16: Device or resource busy.

The kernel still uses the old table. The new table will be used at

the next reboot or after you run partprobe(8) or kpartx(8)

WARNING: If you have created or modified any DOS 6.x

partitions, please see the fdisk manual page for additional

information.

Syncing disks.

格式化分区：
sudo mkfs.vfat -F 32 -n boot /dev/sdb1 //boot是为分区起的名字，就是在硬盘上显示的名字 格式化位fat32格式 第一个分区

sudo mkfs.ext3 -L linux_fs /dev/sdb2 // linux_fs 是第二个分区的名字，格式化位 ext3格式