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How can i recover my corrupted hardisk partition ?

I can tried to recover this partition using GParted but GParted see an error message

GParted 0.25.0 --enable-libparted-dmraid --enable-online-resize

Libparted 3.2 Check and repair file system (ext4) on /dev/sda12

00:00:05 ( ERROR )

   calibrate /dev/sda12  00:00:04    ( SUCCESS )

   path: /dev/sda12 (partition) start: 925020160 end: 952363007 size: 

27342848 (13.04 GiB) check file system on /dev/sda12 for errors and (if possible) fix them 00:00:01 ( ERROR )

   e2fsck -f -y -v -C 0 /dev/sda12  00:00:01    ( ERROR )

   ext2fs_open2: Superblock checksum does not match superblock e2fsck: 

Superblock invalid, trying backup blocks...

The superblock could not be read or does not describe a valid

ext2/ext3/ext4 filesystem. If the device is valid and it really

contains an ext2/ext3/ext4 filesystem (and not swap or ufs or

something else), then the superblock is corrupt, and you might try

running e2fsck with an alternate superblock: e2fsck -b 8193

or e2fsck -b 32768

e2fsck 1.43.4 (31-Jan-2017) e2fsck: Superblock checksum does not match

superblock while trying to open /dev/sda12

========================================

And I tried this commands

sudo mke2fs -n /dev/sda12 mke2fs 1.43.4 (31-Jan-2017) /dev/sda12

This command return

contains a ext4 file system Proceed anyway? (y,N) y Creating

filesystem with 3417856 4k blocks and 855120 inodes Filesystem UUID:

2f228517-1b6f-4520-a934-f27ff670c96e Superblock backups stored on

blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736,

1605632, 2654208

And I tried to recover superblock using these commands

e2fsck -b 32768 /dev/sda12

e2fsck -b 98304 /dev/sda12

e2fsck -b 163840 /dev/sda12

e2fsck -b 229376 /dev/sda12

e2fsck -b 294912 /dev/sda12

e2fsck -b 819200 /dev/sda12

e2fsck -b 884736 /dev/sda12

e2fsck -b 1605632 /dev/sda12

e2fsck -b 2654208 /dev/sda12

In the above commands some of the e2fsck commands return

e2fsck 1.43.4 (31-Jan-2017)

e2fsck: Bad magic number in super-block while trying to open /dev/sda12

The superblock could not be read or does not describe a valid ext2/ext3/ext4

filesystem. If the device is valid and it really contains an ext2/ext3/ext4

filesystem (and not swap or ufs or something else), then the superblock

is corrupt, and you might try running e2fsck with an alternate superblock:

e2fsck -b 8193 <device>

or

e2fsck -b 32768 <device>

/dev/sda12 contains a ext4 file system

and some some of the e2fsck commands return

e2fsck 1.43.4 (31-Jan-2017)

e2fsck: Invalid argument while trying to open /dev/sda12

The superblock could not be read or does not describe a valid ext2/ext3/ext4

filesystem. If the device is valid and it really contains an ext2/ext3/ext4

filesystem (and not swap or ufs or something else), then the superblock

is corrupt, and you might try running e2fsck with an alternate superblock:

e2fsck -b 8193 <device>

or

e2fsck -b 32768 <device>

these errors. Please help me to fix this error and recover my partition.

This partition contain my important data's.

I can also tried to find partitions

sudo fdisk -l

But this command return an error for

Partition 3 does not start on physical sector boundary.

Partition 4 does not start on physical sector boundary.

Partition 5 does not start on physical sector boundary.

Partition 6 does not start on physical sector boundary.

Partition table entries are not in disk order.

Full output of sudo fdisk -l

Disk /dev/sda: 465.8 GiB, 500107862016 bytes, 976773168 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 4096 bytes

I/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disklabel type: dos

Disk identifier: 0x5cef0893

Device Boot Start End Sectors Size Id Type

/dev/sda1 2048 1026047 1024000 500M 7 HPFS/NTFS/exFAT

/dev/sda2 * 1026048 210755583 209729536 100G 7 HPFS/NTFS/exFAT

/dev/sda3 210756735 420469244 209712510 100G 7 HPFS/NTFS/exFAT

/dev/sda4 420469306 976771071 556301766 265.3G f W95 Ext'd (LBA)

/dev/sda5 420469308 630181754 209712447 100G b W95 FAT32

/dev/sda6 630181818 766766384 136584567 65.1G 7 HPFS/NTFS/exFAT

/dev/sda7 766767104 874188799 107421696 51.2G 7 HPFS/NTFS/exFAT

/dev/sda8 874190848 923017215 48826368 23.3G 7 HPFS/NTFS/exFAT

/dev/sda9 952365056 972773375 20408320 9.7G 83 Linux

/dev/sda10 972775424 976771071 3995648 1.9G 82 Linux swap / Solaris

/dev/sda11 923019264 925018111 1998848 976M 83 Linux

/dev/sda12 925020160 952363007 27342848 13G 83 Linux

Partition 3 does not start on physical sector boundary.

Partition 4 does not start on physical sector boundary.

Partition 5 does not start on physical sector boundary.

Partition 6 does not start on physical sector boundary.

Partition table entries are not in disk order.

Please help me to fix Partition table error and recover my corrupted hardisk partition /dev/sda12.

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