Ubuntu下格式化并分区u盘

1.命令行

 sudo fdisk -l

查看你的设备的符号，显示结果通常如下：

 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

 sudo umount /dev/sdb

 sudo fdisk /dev/sdb

在终端显示内容如下：

 Command (m for help):

输入m得到帮助信息：

 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：

 Command (m for help): d 删除命令
 Partition number (1-4): 1 删除地几个分区

 如果有多个分区，接着执行命令d，输入分区号

创建新分区：

 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

 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：

 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：

 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：

 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