Article 5D7NN Wrong fs type, bad option, bad superblock on a harddisk missing codepage or helper program, or other error

Wrong fs type, bad option, bad superblock on a harddisk missing codepage or helper program, or other error

by
Ota-Coder
from LinuxQuestions.org on (#5D7NN)
I'm on KDE Manjaro and I'm getting this error suddenly on my 4TB external harddisk whenever trying to mount in Dolphin.

Code:An error occurred while accessing 'Akari', the system responded: The requested operation has failed: Error mounting /dev/sdg1 at /run/media/daaishi/Akari1: wrong fs type, bad option, bad superblock on /dev/sdg1, missing codepage or helper program, or other errorI don't really remember what fs type it is but I'm sure it was either ntfs or btrfs, one or the other.

It used to work the other day when I backed up some of my files.

Suddenly, it doesn't let me mount the harddisk.

Checking KDE Partition Manager and GParted, it still has more than 1TB of free space and it is in BTRFS.

Am I screwed?

Searching around, I don't want to try using mkfs because it would erase the data it has.

I tried using these commands and gave me the same error:
Code:[daaishi@ayumin ~]$ sudo mount -t btrfs /dev/sdg1 /run/media/daaishi/Akari
mount: /run/media/daaishi/Akari: wrong fs type, bad option, bad superblock on /dev/sdg1, missing codepage or helper program, or other error.
[daaishi@ayumin ~]$ sudo mount -t auto /dev/sdg1 /run/media/daaishi/Akari
mount: /run/media/daaishi/Akari: wrong fs type, bad option, bad superblock on /dev/sdg1, missing codepage or helper program, or other error.When I tried using NTFS:
Code:[daaishi@ayumin ~]$ sudo mount -t ntfs /dev/sdg1 /run/media/daaishi/Akari
NTFS signature is missing.
Failed to mount '/dev/sdg1': Invalid argument
The device '/dev/sdg1' doesn't seem to have a valid NTFS.
Maybe the wrong device is used? Or the whole disk instead of a
partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?Is there anything I can do to still be able to get my data or better yet, let it be mounted and be used again?

I tried now fsck:
Code:[daaishi@ayumin ~]$ sudo fsck /dev/sdg1
fsck from util-linux 2.36.1
If you wish to check the consistency of a BTRFS filesystem or
repair a damaged filesystem, see btrfs(8) subcommand 'check'.Any help would be appreciated. Thank you.latest?d=yIl2AUoC8zA latest?i=y3SbsKYbsVA:thDGUpDpRxs:F7zBnMy latest?i=y3SbsKYbsVA:thDGUpDpRxs:V_sGLiP latest?d=qj6IDK7rITs latest?i=y3SbsKYbsVA:thDGUpDpRxs:gIN9vFwy3SbsKYbsVA
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