Repair after the hyperblock of the LinuxExt3 file system is damaged

Article Title: Repair after the hyperblock of the LinuxExt3 file system is damaged. Linux is a technology channel of the IT lab in China. Including desktop applications, Linux system management, kernel research, embedded systems, open source, and other basic categories # mount/dev/sde1/foo
　
Mount: wrong fs type, bad option, bad superblock on/dev/sde1,
　
Or too mounted file systems
　
. How can this problem be solved?
　
Answer:
　
This error message indicates that the super block of the ext3 File System on the/dev/sde1 device is damaged, and the metadata of the ext3 file system is saved in the super block.
　
The ext3 file system also has several backup Super blocks. You can try to use the backup super block to load the ext3 file system and repair the ext3 file system.
　
The backup super block information can be obtained through the following command. This command simulates the action when the ext3 file system is created and prints the position of the backup super block. The default position is 4 K, when using the mount command, you need to provide an offset in the unit of 1 K, which must be multiplied by 4:
　
Note! You must use '-n' as the parameter to simulate the creation of the ext3 file system instead of creating the ext3 file system.
　
# Mkfs. ext3-n/dev/hda7
　
Mke2fs 1.38 (30-Jun-2005)
　
Filesystem label =
　
OS type: Linux
　
Block size = 4096 (log = 2)
　
Fragment size = 4096 (log = 2)
　
2198880 inodes, 4393738 blocks
　
219686 blocks (5.00%) reserved for the super user
　
First data block = 0
　
135 block groups
　
32768 blocks per group, 32768 fragments per group
　
16288 inodes per group
　
Superblock backups stored on blocks:
　
32768,983 04, 163840,229 376, 294912,819 200, 884736,160 5632, 2654208,
　
4096000
　
Run the following command to load the ext3 File System Using the backup super block:
　
Syntax: mount. ext3-o sb = n
　
# Mount. ext3-o sb = 131072/dev/hda7/media/hda7
　
Use the backup super block to restore the ext3 File System Command
　
Syntax: fsck. ext3-B superblock
　
# Fsck. ext3-B 32768/dev/hda7