After using Extended Self Test and now seeing that my 3TB drive, among many others, has been repaired and cleaned, and now gladly reporting 100% Health after fixing the sector degradation issues, I reformatted the drive.
Then I reformatted it, selecting 4096 bytes/sector, using standard Windows Explorer File/Format menu option and the quick format option.
But still HD Sentinal and the Windows wmic command wmic:root\cli>diskdrive get bytespersector both report 512 bytes per sector.
I am sure you know the reason for this seeming anomaly: there is always a reason.
Please un-confuse me; I would be grateful.