Hi all I do not know what these errors mean, who can tell me.Thanks! sudo smartctl -l error /dev/sda smartctl version 5.38 [i686-pc-linux-gnu] Copyright (C) 2002-8 Bruce Allen Home page is http://smartmontools.sourceforge.net/ === START OF READ SMART DATA SECTION === SMART Error Log Version: 1 ATA Error Count: 20 (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 20 occurred at disk power-on lifetime: 26 hours (1 days + 2 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 -- -- -- -- -- -- -- 10 51 01 81 23 51 e0 Error: IDNF at LBA = 0x00512381 = 5317505 Commands leading to the command that caused the error were: CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name -- -- -- -- -- -- -- -- ---------------- -------------------- 24 03 01 81 23 51 e0 00 00:01:17.400 READ SECTOR(S) EXT 25 03 01 81 23 51 e0 00 00:01:17.300 READ DMA EXT ef 03 45 ff ff 00 e0 00 00:01:17.300 SET FEATURES [Set transfer mode] ef 03 0c ff ff 00 e0 00 00:01:17.300 SET FEATURES [Set transfer mode] c6 ff 10 ff ff 00 e0 00 00:01:17.300 SET MULTIPLE MODE Error 19 occurred at disk power-on lifetime: 26 hours (1 days + 2 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 -- -- -- -- -- -- -- 10 51 01 81 23 51 e0 Error: IDNF 1 sectors at LBA = 0x00512381 = 5317505 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 03 01 81 23 51 e0 00 00:01:17.300 READ DMA EXT ef 03 45 ff ff 00 e0 00 00:01:17.300 SET FEATURES [Set transfer mode] ef 03 0c ff ff 00 e0 00 00:01:17.300 SET FEATURES [Set transfer mode] c6 ff 10 ff ff 00 e0 00 00:01:17.300 SET MULTIPLE MODE 10 ff 50 1b dd 07 e0 00 00:01:17.300 RECALIBRATE [OBS-4] Error 18 occurred at disk power-on lifetime: 26 hours (1 days + 2 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 -- -- -- -- -- -- -- 10 51 01 81 23 51 e0 Error: IDNF at LBA = 0x00512381 = 5317505 Commands leading to the command that caused the error were: CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name -- -- -- -- -- -- -- -- ---------------- -------------------- 24 ff 01 81 23 51 e0 00 00:01:17.000 READ SECTOR(S) EXT 25 ff 01 81 23 51 e0 00 00:01:16.900 READ DMA EXT 25 ff 08 00 50 98 e0 00 00:01:16.900 READ DMA EXT 25 ff 08 b0 cb 2a e0 00 00:01:16.900 READ DMA EXT 25 ff 4f 61 cb 2a e0 00 00:01:16.900 READ DMA EXT Error 17 occurred at disk power-on lifetime: 26 hours (1 days + 2 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 -- -- -- -- -- -- -- 10 51 01 81 23 51 e0 Error: IDNF 1 sectors at LBA = 0x00512381 = 5317505 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 ff 01 81 23 51 e0 00 00:01:16.900 READ DMA EXT 25 ff 08 00 50 98 e0 00 00:01:16.900 READ DMA EXT 25 ff 08 b0 cb 2a e0 00 00:01:16.900 READ DMA EXT 25 ff 4f 61 cb 2a e0 00 00:01:16.900 READ DMA EXT 25 ff 57 0a cb 2a e0 00 00:01:16.900 READ DMA EXT Error 16 occurred at disk power-on lifetime: 26 hours (1 days + 2 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 -- -- -- -- -- -- -- 10 51 01 81 23 51 e0 Error: IDNF at LBA = 0x00512381 = 5317505 Commands leading to the command that caused the error were: CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name -- -- -- -- -- -- -- -- ---------------- -------------------- 24 03 01 81 23 51 e0 00 00:01:15.300 READ SECTOR(S) EXT 25 03 01 81 23 51 e0 00 00:01:15.200 READ DMA EXT ef 03 45 ff ff 00 e0 00 00:01:15.200 SET FEATURES [Set transfer mode] ef 03 0c ff ff 00 e0 00 00:01:15.200 SET FEATURES [Set transfer mode] c6 ff 10 ff ff 00 e0 00 00:01:15.200 SET MULTIPLE MODE


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