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Date:      Sat, 04 Dec 2010 15:50:56 -0800
From:      perryh@pluto.rain.com
To:        bruce@cran.org.uk
Cc:        freebsd-usb@freebsd.org
Subject:   Re: "Autosense failed" - I/O stops on SD card reader
Message-ID:  <4cfad3e0.XgR9we6sGkqf2c9O%perryh@pluto.rain.com>
In-Reply-To: <20101204144023.2f4be1a5@core.draftnet>
References:  <20101204144023.2f4be1a5@core.draftnet>

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Bruce Cran <bruce@cran.org.uk> wrote:
> I've been having problems with a card reader
> (http://www.frontier-electronics.co.za/stor_sdr012.htm) 
> and an 8GB SD card 
...
> (da0:umass-sim0:0:0:0): AutoSense failed
> g_vfs_done():da0s1[READ(offset=6782976, length=36864)]error = 5
> vnode_pager_getpages: I/O read error
> vm_fault: pager read error, pid 2986 (cp)

An 8GB "SD" card is almost certainly an "SDHC" card*, which
AFAICT is not on that reader's list of supported formats.

* SD and SDHC are the same physical size, but SDHC has more
  contacts.



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