El disco duro externo Western Digital (USB) no se monta completamente

Estoy tratando de montar mi HDD externo con formato NTFS en Windows 7 Ultimate, pero se está atascando. El sistema sigue respondiendo, pero la 'barra de progreso de montaje' nunca se completa y la luz del disco continúa parpadeando. No es posible acceder al disco (por ejemplo, intentar ver el contenido). La captura de pantalla está aquí:

Pensé en intentar ejecutar chkdsk, pero chkdsk no se ejecutará hasta que esté completamente montado.

Intentar montar en Debian conduce a la siguiente salida dmesg:

[  329.386037] usb 1-1.2: new high-speed USB device number 6 using ehci_hcd
[  329.494160] Initializing USB Mass Storage driver...
[  329.494284] scsi6 : usb-storage 1-1.2:1.0
[  329.494357] usbcore: registered new interface driver usb-storage
[  329.494359] USB Mass Storage support registered.
[  330.493837] scsi 6:0:0:0: Direct-Access     WD       Ext HDD 1021     2021 PQ: 0 ANSI: 4
[  330.496311] sd 6:0:0:0: Attached scsi generic sg1 type 0
[  330.497885] sd 6:0:0:0: [sdb] 1953519616 512-byte logical blocks: (1.00 TB/931 GiB)
[  330.499817] sd 6:0:0:0: [sdb] Write Protect is off
[  330.499823] sd 6:0:0:0: [sdb] Mode Sense: 17 00 10 08
[  330.501796] sd 6:0:0:0: [sdb] No Caching mode page present
[  330.501802] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[  330.506777] sd 6:0:0:0: [sdb] No Caching mode page present
[  330.506783] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[  330.526297]  sdb: sdb1
[  330.533958] sd 6:0:0:0: [sdb] No Caching mode page present
[  330.533963] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[  330.533969] sd 6:0:0:0: [sdb] Attached SCSI disk
[  332.942365] sd 6:0:0:0: [sdb] Unhandled sense code
[  332.942372] sd 6:0:0:0: [sdb]  Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[  332.942378] sd 6:0:0:0: [sdb]  Sense Key : Medium Error [current] 
[  332.942385] sd 6:0:0:0: [sdb]  Add. Sense: Unrecovered read error
[  332.942392] sd 6:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 08 10 00 00 08 00
[  332.942407] end_request: critical target error, dev sdb, sector 2064
[  332.942413] quiet_error: 54 callbacks suppressed
[  332.942418] Buffer I/O error on device sdb1, logical block 2
[  335.215232] sd 6:0:0:0: [sdb] Unhandled sense code
[  335.215237] sd 6:0:0:0: [sdb]  Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[  335.215243] sd 6:0:0:0: [sdb]  Sense Key : Medium Error [current] 
[  335.215249] sd 6:0:0:0: [sdb]  Add. Sense: Unrecovered read error
[  335.215255] sd 6:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 08 10 00 00 08 00
[  335.215267] end_request: critical target error, dev sdb, sector 2064
[  335.215274] Buffer I/O error on device sdb1, logical block 2
[  337.486626] sd 6:0:0:0: [sdb] Unhandled sense code
[  337.486632] sd 6:0:0:0: [sdb]  Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[  337.486641] sd 6:0:0:0: [sdb]  Sense Key : Medium Error [current] 
[  337.486650] sd 6:0:0:0: [sdb]  Add. Sense: Unrecovered read error
[  337.486660] sd 6:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 08 10 00 00 08 00
[  337.486679] end_request: critical target error, dev sdb, sector 2064
[  337.486689] Buffer I/O error on device sdb1, logical block 2
[  339.803371] sd 6:0:0:0: [sdb] Unhandled sense code
[  339.803377] sd 6:0:0:0: [sdb]  Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[  339.803383] sd 6:0:0:0: [sdb]  Sense Key : Medium Error [current] 
[  339.803389] sd 6:0:0:0: [sdb]  Add. Sense: Unrecovered read error
[  339.803395] sd 6:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 08 10 00 00 08 00
[  339.803407] end_request: critical target error, dev sdb, sector 2064
[  339.803414] Buffer I/O error on device sdb1, logical block 2
[  342.074889] sd 6:0:0:0: [sdb] Unhandled sense code
[  342.074895] sd 6:0:0:0: [sdb]  Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[  342.074901] sd 6:0:0:0: [sdb]  Sense Key : Medium Error [current] 
[  342.074908] sd 6:0:0:0: [sdb]  Add. Sense: Unrecovered read error
[  342.074916] sd 6:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 08 10 00 00 08 00
[  342.074931] end_request: critical target error, dev sdb, sector 2064
[  342.074938] Buffer I/O error on device sdb1, logical block 2
[  344.347321] sd 6:0:0:0: [sdb] Unhandled sense code
[  344.347327] sd 6:0:0:0: [sdb]  Result: hostbyte=invalid driverbyte=DRIVER_SEN[  339.803395] sd 6:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 08 10 00 00 08 00
[  339.803407] end_request: critical target error, dev sdb, sector 2064
[  339.803414] Buffer I/O error on device sdb1, logical block 2
[  342.074889] sd 6:0:0:0: [sdb] Unhandled sense code
[  342.074895] sd 6:0:0:0: [sdb]  Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[  342.074901] sd 6:0:0:0: [sdb]  Sense Key : Medium Error [current] 
[  342.074908] sd 6:0:0:0: [sdb]  Add. Sense: Unrecovered read error
[  342.074916] sd 6:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 08 10 00 00 08 00
[  342.074931] end_request: critical target error, dev sdb, sector 2064
[  342.074938] Buffer I/O error on device sdb1, logical block 2
[  344.347321] sd 6:0:0:0: [sdb] Unhandled sense code
[  344.347327] sd 6:0:0:0: [sdb]  Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[  344.347334] sd 6:0:0:0: [sdb]  Sense Key : Medium Error [current] 
[  344.347341] sd 6:0:0:0: [sdb]  Add. Sense: Unrecovered read error
[  344.347348] sd 6:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 08 10 00 00 08 00
[  344.347363] end_request: critical target error, dev sdb, sector 2064
[  344.347370] Buffer I/O error on device sdb1, logical block 2
[  346.664026] sd 6:0:0:0: [sdb] Unhandled sense code
[  346.664031] sd 6:0:0:0: [sdb]  Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[  346.664036] sd 6:0:0:0: [sdb]  Sense Key : Medium Error [current] 
[  346.664042] sd 6:0:0:0: [sdb]  Add. Sense: Unrecovered read error
[  346.664049] sd 6:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 08 10 00 00 08 00
[  346.664061] end_request: critical target error, dev sdb, sector 2064
[  346.664068] Buffer I/O error on device sdb1, logical block 2
[  348.935584] sd 6:0:0:0: [sdb] Unhandled sense code
[  348.935590] sd 6:0:0:0: [sdb]  Result: hostbyte=invalid driverbyte=DRIVER_SENSE
[  348.935595] sd 6:0:0:0: [sdb]  Sense Key : Medium Error [current] 
[  348.935601] sd 6:0:0:0: [sdb]  Add. Sense: Unrecovered read error
[  348.935607] sd 6:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 08 10 00 00 08 00
[  348.935619] end_request: critical target error, dev sdb, sector 2064
[  348.935626] Buffer I/O error on device sdb1, logical block 2

Debian al menos reconoce un problema y se rescata (la luz externa del HDD deja de parpadear).

¿Alguna idea de cómo proceder?

Creo que un buen lugar para comenzar es una prueba de manejo. Si es posible, extraiga el disco de su caja y conéctelo directamente a una máquina de repuesto (con suerte, tendrá uno).

Luego pruebe la salud del disco duro. Una herramienta simple pero efectiva que me gusta usar es Drive Fitness Test . Esta herramienta esencialmente pasará por la comprobación de la unidad en busca de sectores defectuosos, así como también realizará una serie de otras verificaciones en el proceso.

Si DFT informa que la unidad está fallando (diagnóstico en recuadro rojo), debe verificar si la unidad aún está en garantía y, si es posible, presentar un reclamo de RMA para reemplazarla.

Si no informa ningún problema (verde, ok), no necesita preocuparse por el momento por el estado del disco duro y debe buscar el problema en otra parte.