Re: Disk has many bad sectors
Unfortunately, 9.10 has developed a bad reputation for reporting "false positives" regarding hard disk problems.
You would do better going to the website of the manufacturer of your hard drive, and downloading any disk checking utility they have -- and running that instead.
I encountered the same problems with my WDC drive, downloaded their utility, ran it -- and it found NO errors! That was months ago and I've not had any problems with the drive at all.
Ubuntu 15.04 Mate, Mint 17.1; MS Win 8.1, Win10 TP.
Will not respond to PM requests for support -- use the forums.