Hey did you find a solution? I maybe found something that could interest you !
Complementing @thebrain anwser, I totally wiped and fixed bad sectors on a old SSD drive I fought was borked because of alot of unallocated pending sectors. (In/out errors)
Keep in mind this is advanced stuff and could not work in your case and EVEN brick your hard drive. You will lost all your data and everything will be rewriten.