[vox-tech] Flash Drive mount failure

[Soumyadeep nandi <soumyadeep_nandi@yahMAPSoo.com>]

Hi,
 
 While mounting one of the external hard disk we are getting the following error.
 
 Messages from dmesg:
 usb 1-5: new high speed USB device using ehci_hcd and address 5
 scsi4 : SCSI emulation for USB Mass Storage devices
 usb-storage: device found at 5
 usb-storage: waiting for device to settle before scanning
   Vendor: ST340083  Model: 2A                Rev:  0 0
   Type:   Direct-Access                      ANSI SCSI revision: 00
 SCSI device sda: 781422768 512-byte hdwr sectors (400088 MB)
 sda: assuming drive cache: write through
 SCSI device sda: 781422768 512-byte hdwr sectors (400088 MB)
 sda: assuming drive cache: write through
  sda: sda1
 Attached scsi disk sda at scsi4, channel 0, id 0, lun
 0
 usb-storage: device scan complete
 SCSI error : <4 0 0 0> return code = 0x8000002
 sda: Current: sense key: Medium Error
     Additional sense: Unrecovered read error
 end_request: I/O error, dev sda, sector 0
 Buffer I/O error on device sda, logical block 0
 SCSI error : <4 0 0 0> return code = 0x8000002
 sda: Current: sense key: Medium Error
     Additional sense: Unrecovered read error
 end_request: I/O error, dev sda, sector 8
 Buffer I/O error on device sda, logical block 1
 nfs_statfs: statfs error = 116
 SCSI error : <4 0 0 0> return code = 0x8000002
 sda: Current: sense key: Medium Error
     Additional sense: Unrecovered read error
 end_request: I/O error, dev sda, sector 16
 Buffer I/O error on device sda, logical block 2
 SCSI error : <4 0 0 0> return code = 0x8000002
 sda: Current: sense key: Medium Error
    
 Additional sense: Unrecovered read error
 end_request: I/O error, dev sda, sector 24
 Buffer I/O error on device sda, logical block 3
 SCSI error : <4 0 0 0> return code = 0x8000002
 sda: Current: sense key: Medium Error
     Additional sense: Unrecovered read error
 end_request: I/O error, dev sda, sector 32
 Buffer I/O error on device sda, logical block 4
 SCSI error : <4 0 0 0> return code = 0x8000002
 sda: Current: sense key: Medium Error
     Additional sense: Unrecovered read error
 end_request: I/O error, dev sda, sector 40
 Buffer I/O error on device sda, logical block 5
 nfs_statfs: statfs error = 116
 SCSI error : <4 0 0 0> return code = 0x8000002
 sda: Current: sense key: Medium Error
     Additional sense: Unrecovered read error
 end_request: I/O error, dev sda, sector 48
 Buffer I/O error on device sda, logical block 6
 SCSI error : <4 0 0
 0> return code = 0x8000002
 sda: Current: sense key: Medium Error
     Additional sense: Unrecovered read error
 end_request: I/O error, dev sda, sector 56
 Buffer I/O error on device sda, logical block 7
 
 
 We have been working on this disk and suddenly crashed down and later we are not been able to mount it.
 
 Any suggestion how to recover the data would be greatly appriciated.
 
 Thanking you in advance.
 
 Regards
 Soumyadeep

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