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From: Lowell Gilbert <freebsd-questions-local@be-well.ilk.org>
To: "Ronald F. Guilmette" <rfg@tristatelogic.com>
References: <42307.1258330015@tristatelogic.com>
Date: Sun, 15 Nov 2009 20:24:06 -0500
In-Reply-To: <42307.1258330015@tristatelogic.com> (Ronald F. Guilmette's
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Cc: freebsd-questions@freebsd.org
Subject: Re: Bad Blocks... Should I RMA?
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"Ronald F. Guilmette" <rfg@tristatelogic.com> writes:

> Nov 15 15:24:17 coredump kernel: ad4: FAILURE - READ_DMA status=51<READY,DSC,ERROR> error=40<UNCORRECTABLE> LBA=256230591

This is *not* necessarily a big deal, despite what your other response
told you.  Errors on reads do not mean that your drive's bad-sector
table is full; only errors on write indicate that.  If you can try
manufacturer's drive diagnostics, do that.  If you can't, then it's
harder to fix things up, but not impossible; write back if you
really can't use a low-level diag.

-- 
Lowell Gilbert, embedded/networking software engineer, Boston area
		http://be-well.ilk.org/~lowell/