From owner-freebsd-questions@freebsd.org  Thu Aug 18 22:06:40 2016
Return-Path: <owner-freebsd-questions@freebsd.org>
Delivered-To: freebsd-questions@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id C8770BBE37C
 for <freebsd-questions@mailman.ysv.freebsd.org>;
 Thu, 18 Aug 2016 22:06:40 +0000 (UTC)
 (envelope-from wblock@wonkity.com)
Received: from wonkity.com (wonkity.com [67.158.26.137])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client CN "wonkity.com", Issuer "wonkity.com" (not verified))
 by mx1.freebsd.org (Postfix) with ESMTPS id 9875B177D
 for <freebsd-questions@freebsd.org>; Thu, 18 Aug 2016 22:06:40 +0000 (UTC)
 (envelope-from wblock@wonkity.com)
Received: from wonkity.com (localhost [127.0.0.1])
 by wonkity.com (8.15.2/8.15.2) with ESMTPS id u7IM6c2u090009
 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO);
 Thu, 18 Aug 2016 16:06:38 -0600 (MDT)
 (envelope-from wblock@wonkity.com)
Received: from localhost (wblock@localhost)
 by wonkity.com (8.15.2/8.15.2/Submit) with ESMTP id u7IM6ccK090006;
 Thu, 18 Aug 2016 16:06:38 -0600 (MDT)
 (envelope-from wblock@wonkity.com)
Date: Thu, 18 Aug 2016 16:06:38 -0600 (MDT)
From: Warren Block <wblock@wonkity.com>
To: Jonathan Stewart <jonathan@kc8onw.net>
cc: Ian Smith <smithi@nimnet.asn.au>, freebsd-questions@freebsd.org
Subject: Re: Lexar flash drive dead?
In-Reply-To: <159c6f79-7de6-1234-b5c5-588df8041085@kc8onw.net>
Message-ID: <alpine.BSF.2.20.1608181602380.25296@wonkity.com>
References: <mailman.3901.1471411882.74901.freebsd-questions@freebsd.org>
 <20160817210437.M79687@sola.nimnet.asn.au>
 <159c6f79-7de6-1234-b5c5-588df8041085@kc8onw.net>
User-Agent: Alpine 2.20 (BSF 67 2015-01-07)
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII; format=flowed
X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3
 (wonkity.com [127.0.0.1]); Thu, 18 Aug 2016 16:06:38 -0600 (MDT)
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.22
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-questions>, 
 <mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions/>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
 <mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 18 Aug 2016 22:06:40 -0000

On Wed, 17 Aug 2016, Jonathan Stewart wrote:

> The device is still present but dd gives me the following.
> storage% sudo dd if=/dev/da4 of=/testdump.bin
> dd: /dev/da4: Device not configured
> 0+0 records in
> 0+0 records out
> 0 bytes transferred in 0.001363 secs (0 bytes/sec)
>
> My best guess (assuming the error is accurate) is that I cracked the BGA 
> array and the controller chip is fine but it can't talk to the flash chip. In 
> which case a recovery company can probably either remount it or dismount it 
> and read it externally I hope. Damned expensive though most likely.

Is that one of the USB3 versions?  I have one of those, a Lexar S55 that 
gets burning hot during USB3 transfers.  Data transfer is fast for a 
little while, then suddenly slows down as the buffer is filled or a 
built-in temperature sensor throttles it back.  Oddly enough, a 32G S75 
goes as fast but gets only warm.

It might still work on a USB2 port, if it is a thermal issue.