외장 HDD가 갑자기 작동을 멈췄습니다.

Ubuntu 16.04 (Windows 10으로 이중 부팅)를 사용하고 있습니다. 오늘은 외장 하드 디스크 (WD-My Book Essential) 중 하나를 사용하고 싶었지만 파티션이 나타나지 않았습니다.

장치가 감지되는 것 같지만 두 OS 모두 파티션을 인식 할 수 없습니다. (99 % NTFS라고 확신합니다).

$ ls /dev/sdb*
/dev/sdb

$ sudo fsck.nfs /dev/sdb
/dev/sdb: NFS file system.

$ sudo mount /dev/sdb /mnt -t auto
mount: /dev/sdb: can't read superblock

$ sudo mount /dev/sdb /mnt -t ntfs-3g 
Failed to read bootsector (size=0)
Failed to mount '/dev/sdb': Invalid argument
The device '/dev/sdb' 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?

$ parted -l /dev/sdb
                        <<<< returns nothing
$ lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0 931.5G  0 disk 
├─sda1   8:1    0   350M  0 part 
├─sda2   8:2    0 117.2G  0 part 
├─sda3   8:3    0   466M  0 part 
├─sda4   8:4    0     1K  0 part 
├─sda5   8:5    0 779.3G  0 part 
├─sda6   8:6    0  26.3G  0 part /
└─sda7   8:7    0   7.9G  0 part [SWAP]
sr0     11:0    1  1024M  0 rom  

$ dmesg | tail -30
[ 5276.984581] ses 6:0:0:1: Attached scsi generic sg3 type 13
[ 5276.985126] ses 6:0:0:1: Wrong diagnostic page; asked for 1 got 0
[ 5276.985133] ses 6:0:0:1: Failed to get diagnostic page 0xffffffea
[ 5276.985137] ses 6:0:0:1: Failed to bind enclosure -19
[ 5276.989163] sd 6:0:0:0: [sdb] Test WP failed, assume Write Enabled
[ 5276.989483] sd 6:0:0:0: [sdb] Asking for cache data failed
[ 5276.989491] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[ 5276.992708] sd 6:0:0:0: [sdb] Attached SCSI disk
[ 5328.311463] usb 4-2: USB disconnect, device number 4
[ 5340.934431] usb 4-2: new SuperSpeed USB device number 5 using xhci_hcd
[ 5340.950757] usb 4-2: LPM exit latency is zeroed, disabling LPM.
[ 5340.951456] usb 4-2: New USB device found, idVendor=1058, idProduct=1130
[ 5340.951463] usb 4-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 5340.951467] usb 4-2: Product: My Book 1130
[ 5340.951470] usb 4-2: Manufacturer: Western Digital
[ 5340.951473] usb 4-2: SerialNumber: XXXXXXXXXXXXXXXXXXXXXXXX
[ 5340.951812] usb-storage 4-2:1.0: USB Mass Storage device detected
[ 5340.952206] scsi host7: usb-storage 4-2:1.0
[ 5343.990579] scsi 7:0:0:0: Direct-Access     WD       My Book 1130     1014 PQ: 0 ANSI: 6
[ 5343.991228] scsi 7:0:0:1: Enclosure         WD       SES Device       1014 PQ: 0 ANSI: 6
[ 5343.992376] sd 7:0:0:0: Attached scsi generic sg2 type 0
[ 5343.992534] ses 7:0:0:1: Attached Enclosure device
[ 5343.993104] sd 7:0:0:0: [sdb] Test WP failed, assume Write Enabled
[ 5343.993438] sd 7:0:0:0: [sdb] Asking for cache data failed
[ 5343.993443] sd 7:0:0:0: [sdb] Assuming drive cache: write through
[ 5343.993928] ses 7:0:0:1: Attached scsi generic sg3 type 13
[ 5343.996014] sd 7:0:0:0: [sdb] Attached SCSI disk
[ 5343.997075] ses 7:0:0:1: Wrong diagnostic page; asked for 1 got 0
[ 5343.997081] ses 7:0:0:1: Failed to get diagnostic page 0xffffffea
[ 5343.997085] ses 7:0:0:1: Failed to bind enclosure -19

$ sudo ntfsfix -d -b /dev/sdb 
Mounting volume... Failed to read bootsector (size=0)
FAILED
Attempting to correct errors... Failed to read bootsector (size=0)
FAILED
Failed to startup volume: Invalid argument
Failed to read bootsector (size=0)
Unrecoverable error
Volume is corrupt. You should run chkdsk.

$ sudo dd if=/dev/sdb of=/dev/null count=1
0+0 records in
0+0 records out
0 bytes copied, 0.000143676 s, 0.0 kB/s

$ sudo badblocks -b 4096 -c 4096 -s /dev/sdb
badblocks: invalid starting block (0): must be less than 0

$ sudo smartctl -a /dev/sdb
smartctl 6.5 2016-01-24 r4214 [x86_64-linux-4.4.0-59-generic] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

Read Device Identity failed: scsi error no medium present

A mandatory SMART command failed: exiting. To continue, add one or more '-T permissive' options.

나도 사용 testdisk했습니다. 내 외장 HDD를 인식하지 못했습니다.

Windows에서도 시도했습니다. 디스크 관리에서 디스크를 초기화해야 함을 보여줍니다 (데이터 손실로 끝날 수 있음).

내가 이해하는 한 심각한 하드웨어 결함에 직면하지 않았습니다. 그러나 또한 정확한 문제가 무엇인지 파악할 수 없습니다. 내가 직접 관리 할 수있는 경우 비용이 많이 드는 복구 프로세스는 피하고 싶습니다 (당신의 도움으로)

이 문제를 어떻게 해결해야합니까?