I am unable to figure out where is the exact problem on my disk. as per the screenshot it says that there is Input/Output error.

enter image description here

  • 1
    I/O error is a potential indication of HW failure. – heemayl Jan 19 '17 at 6:16
  • But there isn't any HW failure, everything is working smooth. – Mongrel Jan 19 '17 at 6:18
  • 1
    Take a look at the output of dmesg, there may be some clues there. – Stephen Kitt Jan 19 '17 at 6:23

The error indicated is happening at 4 different offsets (sectors) of your /dev/sdao device:

  1. 0
  2. 4096
  3. 75161862144
  4. 75161919488

How you determine that it is not a hardware failure is beyond me as it is most likely the case.

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