HDD error: SMART Status command failed: scsi error medium or hardware error (serious)

After my PC won't start again (my first guess was the power switch to turn it on was dead), I removed the HDD to extract my data. When I set the HDD (a 640 GB WD) into an external case (USB 2.0), the drive simply won't mount. I am using Fedora 21. Debug output: **SmartControl** smartctl 6.4 2015-06-04 r4109 [x86_64-linux-4.1.5-100.fc21.x86_64] (local build) Copyright (C) 2002-15, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Western Digital Caviar Green Device Model: WDC WD6400AACS-00G8B1 Serial Number: WD-WCAUF3310323 LU WWN Device Id: 5 0014ee 101fa1ac5 Firmware Version: 05.04C05 User Capacity: 640,135,028,736 bytes [640 GB] Sector Size: 512 bytes logical/physical Device is: In smartctl database [for details use: -P show] ATA Version is: ATA8-ACS (minor revision not indicated) SATA Version is: SATA 2.5, 3.0 Gb/s Local Time is: Tue Sep 15 15:43:46 2015 CEST SMART support is: Available - device has SMART capability. SMART support is: Enabled === START OF READ SMART DATA SECTION === SMART Status command failed: scsi error medium or hardware error (serious) SMART overall-health self-assessment test result: PASSED Warning: This result is based on an Attribute check. General SMART Values: Offline data collection status: (0x84) Offline data collection activity was suspended by an interrupting command from host. Auto Offline Data Collection: Enabled. Self-test execution status: ( 0) The previous self-test routine completed without error or no self-test has ever been run. Total time to complete Offline data collection: (15600) seconds. Offline data collection capabilities: (0x7b) SMART execute Offline immediate. Auto Offline data collection on/off support. Suspend Offline collection upon new command. Offline surface scan supported. Self-test supported. Conveyance Self-test supported. Selective Self-test supported. SMART capabilities: (0x0003) Saves SMART data before entering power-saving mode. Supports SMART auto save timer. Error logging capability: (0x01) Error logging supported. General Purpose Logging supported. Short self-test routine recommended polling time: ( 2) minutes. Extended self-test routine recommended polling time: ( 181) minutes. Conveyance self-test routine recommended polling time: ( 5) minutes. SCT capabilities: (0x303f) SCT Status supported. SCT Error Recovery Control supported. SCT Feature Control supported. SCT Data Table supported. SMART Attributes Data Structure revision number: 16 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0 3 Spin_Up_Time 0x0027 142 137 021 Pre-fail Always - 5883 4 Start_Stop_Count 0x0032 099 099 000 Old_age Always - 1796 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0 7 Seek_Error_Rate 0x002e 100 253 000 Old_age Always - 0 9 Power_On_Hours 0x0032 092 092 000 Old_age Always - 6180 10 Spin_Retry_Count 0x0032 100 100 000 Old_age Always - 0 11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 0 12 Power_Cycle_Count 0x0032 099 099 000 Old_age Always - 1766 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 75 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 1796 194 Temperature_Celsius 0x0022 121 099 000 Old_age Always - 26 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 1 198 Offline_Uncorrectable 0x0030 200 200 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0 200 Multi_Zone_Error_Rate 0x0008 200 200 000 Old_age Offline - 0 SMART Error Log Version: 1 No Errors Logged SMART Self-test log structure revision number 1 No self-tests have been logged. [To run self-tests, use: smartctl -t] SMART Selective self-test log data structure revision number 1 SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS 1 0 0 Not_testing 2 0 0 Not_testing 3 0 0 Not_testing 4 0 0 Not_testing 5 0 0 Not_testing Selective self-test flags (0x0): After scanning selected spans, do NOT read-scan remainder of disk. If Selective self-test is pending on power-up, resume after 0 minute delay. **dmesg** [ 6908.519756] usb 1-2: new high-speed USB device number 7 using xhci_hcd [ 6908.684848] usb 1-2: New USB device found, idVendor=1058, idProduct=1021 [ 6908.684865] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 6908.684867] usb 1-2: Product: Ext HDD 1021 [ 6908.684870] usb 1-2: Manufacturer: Western Digital [ 6908.684872] usb 1-2: SerialNumber: 574341554633333130333233 [ 6908.685583] usb-storage 1-2:1.0: USB Mass Storage device detected [ 6908.687976] scsi host13: usb-storage 1-2:1.0 [ 6909.694176] scsi 13:0:0:0: Direct-Access WD Ext HDD 1021 2021 PQ: 0 ANSI: 4 [ 6909.695222] sd 13:0:0:0: Attached scsi generic sg4 type 0 [ 6909.695275] sd 13:0:0:0: [sdd] 1250258944 512-byte logical blocks: (640 GB/596 GiB) [ 6909.696846] sd 13:0:0:0: [sdd] Write Protect is off [ 6909.696863] sd 13:0:0:0: [sdd] Mode Sense: 17 00 10 08 [ 6909.698417] sd 13:0:0:0: [sdd] No Caching mode page found [ 6909.698424] sd 13:0:0:0: [sdd] Assuming drive cache: write through [ 6909.703411] scsi_io_completion: 1 callbacks suppressed [ 6909.703419] sd 13:0:0:0: [sdd] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 6909.703423] sd 13:0:0:0: [sdd] Sense Key : Data Protect [current] [ 6909.703428] sd 13:0:0:0: [sdd] Add. Sense: Logical unit access not authorized [ 6909.703432] sd 13:0:0:0: [sdd] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 6909.703433] blk_update_request: 1 callbacks suppressed [ 6909.703435] blk_update_request: critical target error, dev sdd, sector 0 [ 6909.703439] Buffer I/O error on dev sdd, logical block 0, async page read [ 6909.704014] sd 13:0:0:0: [sdd] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 6909.704020] sd 13:0:0:0: [sdd] Sense Key : Data Protect [current] [ 6909.704024] sd 13:0:0:0: [sdd] Add. Sense: Logical unit access not authorized [ 6909.704028] sd 13:0:0:0: [sdd] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 6909.704031] blk_update_request: critical target error, dev sdd, sector 0 [ 6909.704034] Buffer I/O error on dev sdd, logical block 0, async page read [ 6909.704596] sd 13:0:0:0: [sdd] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 6909.704603] sd 13:0:0:0: [sdd] Sense Key : Data Protect [current] [ 6909.704607] sd 13:0:0:0: [sdd] Add. Sense: Logical unit access not authorized [ 6909.704610] sd 13:0:0:0: [sdd] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 6909.704613] blk_update_request: critical target error, dev sdd, sector 0 [ 6909.704616] Buffer I/O error on dev sdd, logical block 0, async page read [ 6909.704630] ldm_validate_partition_table(): Disk read failed. [ 6909.705046] sd 13:0:0:0: [sdd] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 6909.705050] sd 13:0:0:0: [sdd] Sense Key : Data Protect [current] [ 6909.705053] sd 13:0:0:0: [sdd] Add. Sense: Logical unit access not authorized [ 6909.705056] sd 13:0:0:0: [sdd] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 6909.705058] blk_update_request: critical target error, dev sdd, sector 0 [ 6909.705060] Buffer I/O error on dev sdd, logical block 0, async page read [ 6909.705525] sd 13:0:0:0: [sdd] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 6909.705527] sd 13:0:0:0: [sdd] Sense Key : Data Protect [current] [ 6909.705533] sd 13:0:0:0: [sdd] Add. Sense: Logical unit access not authorized [ 6909.705535] sd 13:0:0:0: [sdd] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 6909.705537] blk_update_request: critical target error, dev sdd, sector 0 [ 6909.705539] Buffer I/O error on dev sdd, logical block 0, async page read [ 6909.705986] sd 13:0:0:0: [sdd] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 6909.705989] sd 13:0:0:0: [sdd] Sense Key : Data Protect [current] [ 6909.705993] sd 13:0:0:0: [sdd] Add. Sense: Logical unit access not authorized [ 6909.705995] sd 13:0:0:0: [sdd] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 6909.705997] blk_update_request: critical target error, dev sdd, sector 0 [ 6909.705999] Buffer I/O error on dev sdd, logical block 0, async page read [ 6909.706421] sd 13:0:0:0: [sdd] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 6909.706424] sd 13:0:0:0: [sdd] Sense Key : Data Protect [current] [ 6909.706427] sd 13:0:0:0: [sdd] Add. Sense: Logical unit access not authorized [ 6909.706430] sd 13:0:0:0: [sdd] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 6909.706431] blk_update_request: critical target error, dev sdd, sector 0 [ 6909.706433] Buffer I/O error on dev sdd, logical block 0, async page read [ 6909.706442] Dev sdd: unable to read RDB block 0 [ 6909.706861] sd 13:0:0:0: [sdd] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 6909.706864] sd 13:0:0:0: [sdd] Sense Key : Data Protect [current] [ 6909.706867] sd 13:0:0:0: [sdd] Add. Sense: Logical unit access not authorized [ 6909.706869] sd 13:0:0:0: [sdd] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 6909.706871] blk_update_request: critical target error, dev sdd, sector 0 [ 6909.706873] Buffer I/O error on dev sdd, logical block 0, async page read [ 6909.707296] sd 13:0:0:0: [sdd] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 6909.707299] sd 13:0:0:0: [sdd] Sense Key : Data Protect [current] [ 6909.707302] sd 13:0:0:0: [sdd] Add. Sense: Logical unit access not authorized [ 6909.707305] sd 13:0:0:0: [sdd] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 6909.707307] blk_update_request: critical target error, dev sdd, sector 0 [ 6909.707308] Buffer I/O error on dev sdd, logical block 0, async page read [ 6909.707318] sdd: unable to read partition table [ 6909.711258] sd 13:0:0:0: [sdd] Attached SCSI disk [ 6909.831440] sd 13:0:0:0: [sdd] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 6909.831449] sd 13:0:0:0: [sdd] Sense Key : Data Protect [current] [ 6909.831456] sd 13:0:0:0: [sdd] Add. Sense: Logical unit access not authorized [ 6909.831461] sd 13:0:0:0: [sdd] CDB: Read(10) 28 00 4a 85 6f 80 00 00 08 00 [ 6909.831465] blk_update_request: critical target error, dev sdd, sector 1250258816 [ 6909.831980] Buffer I/O error on dev sdd, logical block 156282352, async page read [ 6908.519756] usb 1-2: new high-speed USB device number 7 using xhci_hcd [ 6908.684848] usb 1-2: New USB device found, idVendor=1058, idProduct=1021 [ 6908.684865] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 6908.684867] usb 1-2: Product: Ext HDD 1021 [ 6908.684870] usb 1-2: Manufacturer: Western Digital [ 6908.684872] usb 1-2: SerialNumber: 574341554633333130333233 [ 6908.685583] usb-storage 1-2:1.0: USB Mass Storage device detected [ 6908.687976] scsi host13: usb-storage 1-2:1.0 [ 6909.694176] scsi 13:0:0:0: Direct-Access WD Ext HDD 1021 2021 PQ: 0 ANSI: 4 [ 6909.695222] sd 13:0:0:0: Attached scsi generic sg4 type 0 [ 6909.695275] sd 13:0:0:0: [sdd] 1250258944 512-byte logical blocks: (640 GB/596 GiB) [ 6909.696846] sd 13:0:0:0: [sdd] Write Protect is off [ 6909.696863] sd 13:0:0:0: [sdd] Mode Sense: 17 00 10 08 [ 6909.698417] sd 13:0:0:0: [sdd] No Caching mode page found [ 6909.698424] sd 13:0:0:0: [sdd] Assuming drive cache: write through [ 6909.703411] scsi_io_completion: 1 callbacks suppressed [ 6909.703419] sd 13:0:0:0: [sdd] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 6909.703423] sd 13:0:0:0: [sdd] Sense Key : Data Protect [current] [ 6909.703428] sd 13:0:0:0: [sdd] Add. Sense: Logical unit access not authorized [ 6909.703432] sd 13:0:0:0: [sdd] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 6909.703433] blk_update_request: 1 callbacks suppressed [ 6909.703435] blk_update_request: critical target error, dev sdd, sector 0 [ 6909.703439] Buffer I/O error on dev sdd, logical block 0, async page read [ 6909.704014] sd 13:0:0:0: [sdd] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 6909.704020] sd 13:0:0:0: [sdd] Sense Key : Data Protect [current] [ 6909.704024] sd 13:0:0:0: [sdd] Add. Sense: Logical unit access not authorized [ 6909.704028] sd 13:0:0:0: [sdd] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 6909.704031] blk_update_request: critical target error, dev sdd, sector 0 [ 6909.704034] Buffer I/O error on dev sdd, logical block 0, async page read [ 6909.704596] sd 13:0:0:0: [sdd] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 6909.704603] sd 13:0:0:0: [sdd] Sense Key : Data Protect [current] [ 6909.704607] sd 13:0:0:0: [sdd] Add. Sense: Logical unit access not authorized [ 6909.704610] sd 13:0:0:0: [sdd] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 6909.704613] blk_update_request: critical target error, dev sdd, sector 0 [ 6909.704616] Buffer I/O error on dev sdd, logical block 0, async page read [ 6909.704630] ldm_validate_partition_table(): Disk read failed. [ 6909.705046] sd 13:0:0:0: [sdd] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 6909.705050] sd 13:0:0:0: [sdd] Sense Key : Data Protect [current] [ 6909.705053] sd 13:0:0:0: [sdd] Add. Sense: Logical unit access not authorized [ 6909.705056] sd 13:0:0:0: [sdd] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 6909.705058] blk_update_request: critical target error, dev sdd, sector 0 [ 6909.705060] Buffer I/O error on dev sdd, logical block 0, async page read [ 6909.705525] sd 13:0:0:0: [sdd] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 6909.705527] sd 13:0:0:0: [sdd] Sense Key : Data Protect [current] [ 6909.705533] sd 13:0:0:0: [sdd] Add. Sense: Logical unit access not authorized [ 6909.705535] sd 13:0:0:0: [sdd] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 6909.705537] blk_update_request: critical target error, dev sdd, sector 0 [ 6909.705539] Buffer I/O error on dev sdd, logical block 0, async page read [ 6909.705986] sd 13:0:0:0: [sdd] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 6909.705989] sd 13:0:0:0: [sdd] Sense Key : Data Protect [current] [ 6909.705993] sd 13:0:0:0: [sdd] Add. Sense: Logical unit access not authorized [ 6909.705995] sd 13:0:0:0: [sdd] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 6909.705997] blk_update_request: critical target error, dev sdd, sector 0 [ 6909.705999] Buffer I/O error on dev sdd, logical block 0, async page read [ 6909.706421] sd 13:0:0:0: [sdd] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 6909.706424] sd 13:0:0:0: [sdd] Sense Key : Data Protect [current] [ 6909.706427] sd 13:0:0:0: [sdd] Add. Sense: Logical unit access not authorized [ 6909.706430] sd 13:0:0:0: [sdd] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 6909.706431] blk_update_request: critical target error, dev sdd, sector 0 [ 6909.706433] Buffer I/O error on dev sdd, logical block 0, async page read [ 6909.706442] Dev sdd: unable to read RDB block 0 [ 6909.706861] sd 13:0:0:0: [sdd] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 6909.706864] sd 13:0:0:0: [sdd] Sense Key : Data Protect [current] [ 6909.706867] sd 13:0:0:0: [sdd] Add. Sense: Logical unit access not authorized [ 6909.706869] sd 13:0:0:0: [sdd] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 6909.706871] blk_update_request: critical target error, dev sdd, sector 0 [ 6909.706873] Buffer I/O error on dev sdd, logical block 0, async page read [ 6909.707296] sd 13:0:0:0: [sdd] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 6909.707299] sd 13:0:0:0: [sdd] Sense Key : Data Protect [current] [ 6909.707302] sd 13:0:0:0: [sdd] Add. Sense: Logical unit access not authorized [ 6909.707305] sd 13:0:0:0: [sdd] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 6909.707307] blk_update_request: critical target error, dev sdd, sector 0 [ 6909.707308] Buffer I/O error on dev sdd, logical block 0, async page read [ 6909.707318] sdd: unable to read partition table [ 6909.711258] sd 13:0:0:0: [sdd] Attached SCSI disk [ 6909.831440] sd 13:0:0:0: [sdd] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 6909.831449] sd 13:0:0:0: [sdd] Sense Key : Data Protect [current] [ 6909.831456] sd 13:0:0:0: [sdd] Add. Sense: Logical unit access not authorized [ 6909.831461] sd 13:0:0:0: [sdd] CDB: Read(10) 28 00 4a 85 6f 80 00 00 08 00 [ 6909.831465] blk_update_request: critical target error, dev sdd, sector 1250258816 [ 6909.831980] Buffer I/O error on dev sdd, logical block 156282352, async page read I don't know if this is the right place to ask this question, but I am out of ideas. Is the drive itself dead? Is there any way to repair it to get access to the data on it? Any help or suggestions whatsoever are appreciated.