U盘被分成几个分区的恢复

我用df -lh命令看了下,被分成了四个。具体如下:

/dev/sda1             1.9G  4.0K  1.9G   1% /media/9F15-2076
/dev/sda6             1.9G  4.0K  1.9G   1% /media/A070-1636
/dev/sda5             1.9G  4.0K  1.9G   1% /media/A002-176E
/dev/sda7             1.9G  4.0K  1.9G   1% /media/A0CE-2BB4

首先,查看挂载位置,使用命令fdisk -l,查看到U盘的挂载位置如下:

Disk /dev/sda: 8074 MB, 8074035200 bytes
255 heads, 63 sectors/track, 981 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: 0xe4d2e4d2

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1         245     1967931    7  HPFS/NTFS
/dev/sda2             246         981     5911920    5  Extended
/dev/sda5             246         490     1967931    7  HPFS/NTFS
/dev/sda6             491         735     1967931    7  HPFS/NTFS
/dev/sda7             736         981     1975963+   7  HPFS/NTFS

然后,要进行的步骤是删除分区。使用命令:

[root@direwolf  wolf]# fdisk /dev/sda

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)
通过键入m,帮助可以知道,d是用来删除分区的。进行如下的操作:

Command (m for help): d
Partition number (1-7): 6
依次类推,直到删除所有的分区,之后输入w,将修改写入U盘
Command (m for help): w
最后,创建新分区并格式化,使用下面的命令:

mkfs.vfat /dev/sda  -I

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