External HDD not mounting

I am quite new in Linux. My mobo is Gigabyte B85M-D3H. Processor i3. Ram 8GB. OS Linux Mint 19.2 One of my External HDD suddenly not mounting I can see it in Computer but cannot open it. It is connected Directly with the Box not by any hub. I used the folloing command but no result.

Code: soma@soma-B85M-D3H:~$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 140.7M 1 loop /snap/gnome-3-26-1604/97
loop1 7:1 0 89.1M 1 loop /snap/core/7917
loop2 7:2 0 44.2M 1 loop /snap/gtk-common-themes/1353
loop3 7:3 0 156M 1 loop /snap/gnome-3-28-1804/91
loop4 7:4 0 150.2M 1 loop /snap/opera/57
loop5 7:5 0 28.9M 1 loop /snap/chromium-ffmpeg/15
loop6 7:6 0 229.7M 1 loop /snap/krita/52
loop7 7:7 0 84.3M 1 loop /snap/simplenote/129
loop8 7:8 0 54.5M 1 loop /snap/core18/1223
sda 8:0 0 931.5G 0 disk
a""a"sda1 8:1 0 931.5G 0 part /
sdb 8:16 0 931.5G 0 disk
a""a"sdb1 8:17 0 931.5G 0 part
sr0 11:0 1 1024M 0 rom
soma@soma-B85M-D3H:~$ grep $USER /etc/passwd
soma:x:1000:1000:soma,,,:/home/soma:/bin/bash
soma@soma-B85M-D3H:~$ sudo mount /dev/sdb1 /Full/path/ -
[sudo] password for soma:
mount: bad usage
Try 'mount --help' for more information.
soma@soma-B85M-D3H:~$I also tried

CODE] soma@soma-B85M-D3H:~$ sudo mount -t ntfs /dev/sdb1 /media
$MFTMirr does not match $MFT (record 0).
Failed to mount '/dev/sdb1': Input/output error
NTFS is either inconsistent, or there is a hardware fault, or it's a
SoftRAID/FakeRAID hardware. In the first case run chkdsk /f on Windows
then reboot into Windows twice. The usage of the /f parameter is very
important! If the device is a SoftRAID/FakeRAID then first activate
it and mount a different device under the /dev/mapper/ directory, (e.g.
/dev/mapper/nvidia_eahaabcc1). Please see the 'dmraid' documentation
for more details.[/CODE]

I am feeling helpless. Please guide me what to do.