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Date:      Thu, 15 Nov 2012 04:31:27 -0500
From:      "Thomas Mueller" <mueller23@insightbb.com>
To:        freebsd-questions@freebsd.org
Cc:        Mike Clarke <jmc-freebsd2@milibyte.co.uk>
Subject:   Re: Mounting SD card.
Message-ID:  <4B.91.25607.F66B4A05@smtp02.insight.synacor.com>

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> >I think that's pretty much standard behaviour. The solution appears to be
> >to "wake" it up with the following incantation:

> >    dd if=/dev/null of=/dev/da0 count=0

> >That's what works here. See the thread starting with
> ><http://lists.freebsd.org/pipermail/freebsd-questions/2010-February/212109.html>;

> true > /dev/da0

> is a little shorter and safer.  The search keywords for this are "GEOM
> retaste" or "retasting".

Could you also do a read such as

dd if=/dev/da0 of=/dev/null bs=16k count=1

?


Tom



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