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Date: Fri, 6 Jan 2012 07:39:38 -0700 (MST)
From: Warren Block <wblock@wonkity.com>
To: Bas Smeelen <b.smeelen@ose.nl>
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	(wonkity.com [127.0.0.1]); Fri, 06 Jan 2012 07:39:38 -0700 (MST)
Cc: freebsd-questions@freebsd.org
Subject: Re: Apparently conflicting smartctl output
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On Fri, 6 Jan 2012, Bas Smeelen wrote:

> I have had this with a drive and multiple read errors would not remap the
> sector.
> With write errors the sector would be remapped. This was a new Samsung
> laptop drive though, not a Western Digital.

That's standard.  Sectors are only remapped to spares on a write error.

> To get the sector remapped I had to fully write the drive and it was ok
> after that.

Just writing to the sector should be enough.  Of course, when one sector 
goes bad, others often follow.