New
#61
It is possible that you coppied a corrupted sector, but I do not think that would interfere with a diagnostic utility that checks for bad sectors. A corrupted sector is not the same as a bad sector. A bad sector is a damaged sector that cannot be written to anymore. It happens on nearly all drives during their lifespans, but it can start to happen in a catastrophic manner, as when a hard drive starts to fail and repeatedly more sectors become damaged when it spins. A full format will find bad sectors and allocate the rest of the drive to avoid those sectors when writing to free space.
If you do a full format and then the diagnostics pass, then it may just be that you had some bad sectors that built up and the drive is actually fine. If a full format still does not resolve all issues, i.e. maybe the diagnostic passes but your computer starts having similar issues again in a week or a month, it may mean your drive is failing.