I am not sure what you are trying to do. Understand all disks have some bad sectors straight from the factory. That is normal. And it is normal for some more bad sectors to appear during the life of the drive.
Running chkdsk /r on the drive will attempt to recover any bad sectors, if it can.
Running the diagnostics from the drive maker (as found
here for your WD drive) can help recover any bad sectors too -
IF they are recoverable.
If you are disposing of this drive and you are wisely concerned about security, then I recommend you "wipe" the drive with a good "wipe" utility like DBAN or
Link Removed due to 404 Error which uses DBAN technologies, but with a Windows GUI front end. CCleaner is also able to wipe a drive, or wipe just the free space (a very handy option, BTW). Wiping a drive (writing a bunch of random 1s and 0s to every byte and sector on the drive) ensure no residual data can be recovered.
Alternatively, if you are disposing of this drive and you want to ensure no data can be retrieved from it, you can do what I do and drill 3 holes all the way through the drive, ensuring you also go through the platters.