Hard Disk Failure Error. What Could Be The Reason ?
I couldn't find solution for that, so I bought another new HD & was not using failed HD.
Yesterday, I started messing with it & similar to old problem, it use to stuck in bootscreen. Somehow, I managed to start OS.
So, I started gparted & following warning appeared :

What could be the problem ? This small 250 GB HD does have precious data in /home directory which I can't even copy. Error pops continuously while doing so.
Any tips to recover data ? And why this type of warning is shown ? any idea ?