Bad block list and defragging drive problem.

[Piru]

Backup the data NOW, the minimum everything you can't get back elsewhere. This is the first thing to do. The drive is dying fast, it's far better idea to get the important data off it rather than tempting fate.

Frankly mapping the bad blocks is a waste of time. The drive is likely to fail completely very soon, so better replace it with a new one. HDDs are dirt cheap these days, anyway.

[Piru]

I'm afraid if the drive is spinning down the damage is really serious. Too serious to get repaired by disk zerofill utility.

[Piru]

Sure, filling a drive with zeroes didn't ever repair any drive but the scan after the llf build the drive bad block list so, if the drive have enough spare blocks the bad blocks will be marked as bad in the drive bad block list (not in the filesystem) so the disk will be declared defect free.

Actually the zerofill fixes the problems. Those applications just write all zero to the disk, and the disk firmware does the remapping automagically.

However, since the drive is spinning down the damage is way beyond what the remap can do. Likely there's some physical damage on the platter.

I've never been able to zerofill-repair a drive that spins down and makes nasty noises.