ad0: TIMEOUT - Is my disk dying?

Wood, Russell Russell.Wood at
Fri Mar 30 07:09:06 UTC 2007

> -----Original Message-----
> From: owner-freebsd-questions at [mailto:owner-freebsd-
> questions at] On Behalf Of Guido Demmenie
> Sent: Friday, 30 March 2007 3:00 PM
> To: Christian Walther
> Cc: FreeBSD Users Questions
> Subject: Re: ad0: TIMEOUT - Is my disk dying?
> On Mar 29, 2007, at 11:20 PM, Christian Walther wrote:
> > Hi,
> >
> > I'm seeing a lot of the following messages lately:
> >
> > Mar 29 21:02:01 pixie kernel: ad0: TIMEOUT - READ_DMA retrying (1
> > retry left) LBA=13554983
> > Mar 29 21:02:34 pixie kernel: ad0: TIMEOUT - READ_DMA retrying (1
> > retry left) LBA=35376691
> >
> You also might want to give smartmontools a try. This can be found
> in the portscollection (sysutils/smartmontools). This will query
> the SMART tool built in most IDE drives. You can let the harddrive
> do a selfcheck. And gather some statistics from your drive.
> --
> Guido

When you have a suspected faulty hard drive, the last thing you want to
do is use it. If you want additional confirmation (which I doubt you
need as what you have printed is ample) then try Seatools from Seagate.
It's free and runs of a CDROM.

- Russell

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