Erro ao montar o sistema de arquivos ntfs no linux?

Question

Eu estava tentando fazer um backup e atrapalhei algo e agora estou recebendo o erro acima.

[msingh@centos boot]$ rpm -qa ntfs-3g ntfsprogs
ntfs-3g-2017.3.23-6.el7.x86_64
ntfsprogs-2017.3.23-6.el7.x86_64
[msingh@centos boot]$ 

Como posso consertar isso?

Edite conforme sugestão dada por Emmanuel:

[msingh@centos boot]$ file /dev/sdb1
/dev/sdb1: block special
[msingh@centos boot]$ sudo mount -t ntfs-3g /dev/sdb1 /mnt
NTFS signature is missing.
Failed to mount '/dev/sdb1': Invalid argument
The device '/dev/sdb1' 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?
[msingh@centos boot]$