SMART Error Log Version: 1 
ATA Error Count: 8 (device log contains only the most recent five errors)
    CR = Command Register [HEX]
    FR = Features Register [HEX]
    SC = Sector Count Register [HEX]
    SN = Sector Number Register [HEX]
    CL = Cylinder Low Register [HEX]
    CH = Cylinder High Register [HEX]
    DH = Device/Head Register [HEX]
    DC = Device Command Register [HEX]
    ER = Error register [HEX]
    ST = Status register [HEX]
Powered_Up_Time is measured from power on, and printed as
DDd+hh:mm:SS.sss where DD=days, hh=hours, mm=minutes,
SS=sec, and sss=millisec. It "wraps" after 49.710 days.

Error 8 occurred at disk power-on lifetime: 2100 hours (87 days + 12 hours) 
  When the command that caused the error occurred, the device was active or idle.
  
  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --  
  40 51 08 a0 60 6d 46  Error: UNC 8 sectors at LBA = 0x066d60a0 = 107831456

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  25 00 08 a0 60 6d 40 00      02:47:59.100  READ DMA EXT
  25 00 08 a0 60 6d 40 00      02:47:55.000  READ DMA EXT
  ef 10 02 00 00 00 00 00      02:47:55.000  SET FEATURES [Reserved for Serial ATA]
  ef 02 00 00 00 00 00 00      02:47:55.000  SET FEATURES [Enable write cache]
  ef aa 00 00 00 00 00 00      02:47:55.000  SET FEATURES [Enable read look-ahead]

Error 7 occurred at disk power-on lifetime: 2100 hours (87 days + 12 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:

  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 08 a0 60 6d 46  Error: UNC 8 sectors at LBA = 0x066d60a0 = 107831456

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  25 00 08 a0 60 6d 40 00      02:47:55.000  READ DMA EXT
  ef 10 02 00 00 00 00 00      02:47:55.000  SET FEATURES [Reserved for Serial ATA]
  ef 02 00 00 00 00 00 00      02:47:55.000  SET FEATURES [Enable write cache]
  ef aa 00 00 00 00 00 00      02:47:55.000  SET FEATURES [Enable read look-ahead]
  ef 03 46 00 00 00 00 00      02:47:55.000  SET FEATURES [Set transfer mode]

Error 6 occurred at disk power-on lifetime: 2100 hours (87 days + 12 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 08 a0 60 6d 46  Error: UNC 8 sectors at LBA = 0x066d60a0 = 107831456

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  25 00 08 a0 60 6d 40 00      02:47:25.000  READ DMA EXT
  25 00 08 a0 60 6d 40 00      02:47:21.300  READ DMA EXT
  2f 00 01 10 00 00 00 00      02:47:21.300  READ LOG EXT
  60 10 c0 e8 f3 1c 40 00      02:47:17.600  READ FPDMA QUEUED
  60 08 b8 f8 af 25 40 00      02:47:17.600  READ FPDMA QUEUED

Error 5 occurred at disk power-on lifetime: 2100 hours (87 days + 12 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 08 a0 60 6d 46  Error: UNC 8 sectors at LBA = 0x066d60a0 = 107831456

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  25 00 08 a0 60 6d 40 00      02:47:21.300  READ DMA EXT
  2f 00 01 10 00 00 00 00      02:47:21.300  READ LOG EXT
  60 10 c0 e8 f3 1c 40 00      02:47:17.600  READ FPDMA QUEUED
  60 08 b8 f8 af 25 40 00      02:47:17.600  READ FPDMA QUEUED
  60 08 b0 a0 60 6d 40 00      02:47:17.600  READ FPDMA QUEUED

Error 4 occurred at disk power-on lifetime: 2100 hours (87 days + 12 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 08 a0 60 6d 46  Error: UNC 8 sectors at LBA = 0x066d60a0 = 107831456

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  25 00 08 a0 60 6d 40 00      02:47:13.500  READ DMA EXT
  ef 10 02 00 00 00 00 00      02:47:13.500  SET FEATURES [Reserved for Serial ATA]
  ef 02 00 00 00 00 00 00      02:47:13.500  SET FEATURES [Enable write cache]
  ef aa 00 00 00 00 00 00      02:47:13.500  SET FEATURES [Enable read look-ahead]
  ef 03 46 00 00 00 00 00      02:47:13.500  SET FEATURES [Set transfer mode]