Cannot access internal HDD error mounting /dev/sdb2 (NTFS signature is missing) [closed]

Installing ntfs-progs or ntfs-3g should fix the issue you're experiencing.

I don't think it matters which of the two you install, you can the Ubuntu Documentation to see if one of the two is preferred. I recall one of the two being preferred in Arch Linux but I don't recall which.

You can check to see if you already have them installed using:

dpkg -l | grep ntfs | grep ii # if there is no output, then you need to install
# one of the ntfs pacakges.

Example of how to install ntfs-progs

apt-get install ntfs-progs # make sure that you run this as root

To run something as root, prefix the command with sudo:

sudo apt-get install ntfs-progs

The essential part seems to be the following error message:

exited with non-zero exit status 12: NTFS signature is missing.

As you should have no data on that partition in your case, you should simply create a new NTFS filesystem without quick format option.

In case you had data on the partition, you should scan the filesystem for errors, preferably on Windows.

Reformatting a partition with NTFS

• Option 1: Terminal

  sudo mkntfs /dev/sdXY
  

  See the mkntfs manpage for details. Don't use -f or -Q.

• Option 2: Disks Utility (installed by default)

  

  

• Option 3: GParted

  

  See also: Partitioning instructions.