2 TB external HD does not mount any more. How to save it's data?

[basroufs at gmail.com]

> There's a good chance the drive is dead. If possible, use the smartctl -a
> command to view what's going on with the drive.

Now, I carry out 3 tests.

> bas at Viaconsensus-camino:~$ lsusb
> Bus 001 Device 011: ID 1058:1021 Western Digital Technologies, Inc. Elements
> 2TB Bus 001 Device 002: ID 13d3:5711 IMC Networks
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Here, the external HD shows up.

> bas at Viaconsensus-camino:~$ sudo smartctl -a /dev/sdb1
> smartctl 6.2 2013-07-26 r3841 [i686-linux-3.13.0-43-generic] (local build)
> Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org
> 
> Smartctl open device: /dev/sdb1 failed: No such device


In this case, the device is NOT being shown.

GParted does see it, however, it mentions the following:
> Input/output error during read on /dev/sdb.






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