Advance question about HD repair

I need some help on this one. I own and operate a computer shop; have for 17 years now. We backup everything on a computer’s hard drive that comes in the door using Symantec ghost. We take the drive physically out of the customer’s machine and connect it to ours and make a backup to a ghost server.  We also do hard drive testing from this same machine as it has an IDE cdrom for DOS programs like seatools and data lifeguard diag for DOS. I had this customer with a WDC Blue desktop drive come up with bad blocks or sectors during the ghosting process. This is a tell tell sign there is trouble with the drive. The customer was told the drive was bad and it was replaced with a SSD. Two weeks go by and the customer had another “computer guy” look at the repair work we did on her machine and came up with the drive as being “good”. I did not personally do the work, so I don’t know if the WD DLG was ran to verify the drive was bad, but do see a found.000 folder in the ghost imagine, another tell tell sign the drive is bad. We are not an unhonest shop and I do not like being portrayed as one.  I believe this other “computer person” ran the repair utility on this drive and repaired the damage and is suggesting we ripped this person off.   My question is can you tell that it has been repaired  from the attached picture?

Thanks for you time and help.

“I believe this other ‘computer person’ ran the repair utility on this drive and repaired the damage”

What repair utility? Lifeguard does not repair drives; it only diagnoses them.

I have seen Lifeguard indicate a problem when writing zeros to the entire drive, but then after I formatted it (full format), the errors went away. It sounds like your shop diagnosed the problem correctly, but the drive is giving inconsistent results.

I’d explain to the customer that the drive is unreliable and could die any time. Also the customer now has a PC which is much faster because of the SSD.

Do you know if WDC would diagnose the drive and give it a  pass or fail? I’m ok with paying for this service it would be nice to have a 3rd party to test and go beyond the testing with software (dlgdiag).