dmesg

[480290.039349] usb 1-1.1: new high-speed USB device number 21 using ci_hdrc
[480290.153125] usb 1-1.1: New USB device found, idVendor=04fc, idProduct=0c25
[480290.153140] usb 1-1.1: New USB device strings: Mfr=2, Product=3, SerialNumber=1
[480290.153149] usb 1-1.1: Product: USB to Serial-ATA bridge
[480290.153156] usb 1-1.1: Manufacturer: Sunplus Technology Inc.
[480290.153164] usb 1-1.1: SerialNumber: WDC WD20EZ     WD-WMC300869448
[480290.155593] usb-storage 1-1.1:1.0: USB Mass Storage device detected
[480290.156003] scsi host8: usb-storage 1-1.1:1.0
[480291.153189] scsi 8:0:0:0: Direct-Access     WDC WD20 EZRX-00DC0B0          PQ: 0 ANSI: 2
[480291.154914] sd 8:0:0:0: [sda] 3907029168 512-byte logical blocks: (2.00 TB/1.81 TiB)
[480291.157158] sd 8:0:0:0: [sda] Write Protect is off
[480291.157179] sd 8:0:0:0: [sda] Mode Sense: 38 00 00 00
[480291.162849] sd 8:0:0:0: [sda] No Caching mode page found
[480291.162877] sd 8:0:0:0: [sda] Assuming drive cache: write through
[480293.936280] sd 8:0:0:0: [sda] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08
[480293.936299] sd 8:0:0:0: [sda] tag#0 Sense Key : 0x3 [current] 
[480293.936310] sd 8:0:0:0: [sda] tag#0 ASC=0x11 ASCQ=0x0 
[480293.936322] sd 8:0:0:0: [sda] tag#0 CDB: opcode=0x28 28 00 00 00 00 00 00 00 08 00
[480293.936332] blk_update_request: critical medium error, dev sda, sector 0
[480293.936344] Buffer I/O error on dev sda, logical block 0, async page read
[480299.284153] sd 8:0:0:0: [sda] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08
[480299.284174] sd 8:0:0:0: [sda] tag#0 Sense Key : 0x3 [current] 
[480299.284184] sd 8:0:0:0: [sda] tag#0 ASC=0x11 ASCQ=0x0 
[480299.284195] sd 8:0:0:0: [sda] tag#0 CDB: opcode=0x28 28 00 00 00 00 00 00 00 08 00
[480299.284205] blk_update_request: critical medium error, dev sda, sector 0
[480299.284214] Buffer I/O error on dev sda, logical block 0, async page read
[480302.972405] sd 8:0:0:0: [sda] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08
[480302.972423] sd 8:0:0:0: [sda] tag#0 Sense Key : 0x3 [current] 
[480302.972434] sd 8:0:0:0: [sda] tag#0 ASC=0x11 ASCQ=0x0 
[480302.972446] sd 8:0:0:0: [sda] tag#0 CDB: opcode=0x28 28 00 00 00 00 00 00 00 08 00
[480302.972456] blk_update_request: critical medium error, dev sda, sector 0
[480302.972468] Buffer I/O error on dev sda, logical block 0, async page read
[480302.972504]  sda: unable to read partition table
[480302.979565] sd 8:0:0:0: [sda] Attached SCSI disk
[480307.487402] sd 8:0:0:0: [sda] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08
[480307.487421] sd 8:0:0:0: [sda] tag#0 Sense Key : 0x3 [current] 
[480307.487431] sd 8:0:0:0: [sda] tag#0 ASC=0x11 ASCQ=0x0 
[480307.487442] sd 8:0:0:0: [sda] tag#0 CDB: opcode=0x28 28 00 e8 e0 88 00 00 00 08 00
[480307.487452] blk_update_request: critical medium error, dev sda, sector 3907028992
[480310.264906] sd 8:0:0:0: [sda] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08
[480310.264926] sd 8:0:0:0: [sda] tag#0 Sense Key : 0x3 [current] 
[480310.264936] sd 8:0:0:0: [sda] tag#0 ASC=0x11 ASCQ=0x0 
[480310.264949] sd 8:0:0:0: [sda] tag#0 CDB: opcode=0x28 28 00 e8 e0 88 00 00 00 08 00
[480310.264961] blk_update_request: critical medium error, dev sda, sector 3907028992
[480310.264970] Buffer I/O error on dev sda, logical block 488378624, async page read