anon@anon:~$ sudo mount -t ntfs /dev/sdb5 /mnt -o iocharset=utf8,uid=1000,gid=1000
NTFS signature is missing.
Failed to mount '/dev/sdb5': Invalid argument
The device '/dev/sdb5' 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?
anon@anon:~$