Linux下 格式化U盘和挂载
1、插入U盘
2、输入 fdisk -l 查看输出结果，比如我的是这样的：
root@ubuntu:/# fdisk -l
Disk /dev/sda: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 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: 0x000d3b46
Device Boot Start End Blocks Id System
/dev/sda1 * 1 32 248832 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 32 1045 8136705 5 Extended
/dev/sda5 32 1045 8136704 8e Linux LVM
This disk has both DOS and BSD magic.
Give the 'b' command to go to BSD mode.
Disk /dev/sdb: 4012 MB, 4012900352 bytes
124 heads, 62 sectors/track, 1019 cylinders
Units = cylinders of 7688 * 512 = 3936256 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdb1 1 1019 3917005 83 Linux
其中/dev/sdb1就是我们的U盘。
3.格式化U盘
root@ubuntu:/# fdisk /dev/sdb
This disk has both DOS and BSD magic.
Give the 'b' command to go to BSD mode.
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
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
Selected partition 1
Command (m for help): p
Disk /dev/sdb: 4012 MB, 4012900352 bytes
124 heads, 62 sectors/track, 1019 cylinders
Units = cylinders of 7688 * 512 = 3936256 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
root@ubuntu:/# ls /dev/sd*
/dev/sda /dev/sda1 /dev/sda2 /dev/sda5 /dev/sdb
root@ubuntu:/# fdisk /dev/sdb
This disk has both DOS and BSD magic.
Give the 'b' command to go to BSD mode.
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): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1 ；1个分区
First cylinder (1-1019, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-1019, default 1019):
Using default value 1019
Command (m for help): p ；查看
Disk /dev/sdb: 4012 MB, 4012900352 bytes
124 heads, 62 sectors/track, 1019 cylinders
Units = cylinders of 7688 * 512 = 3936256 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdb1 1 1019 3917005 83 Linux
Command (m for help): w ；写入分区表
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
root@ubuntu:/# mkfs.vfat -F 32 -n disk /dev/sdb1 ；格式化
mkfs.vfat 3.0.7 (24 Dec 2009)
4.挂载
root@ubuntu:/# mount /dev/sdb1 /udisk