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Date:      Mon, 3 Aug 2015 17:09:20 +0200
From:      Alban Hertroys <haramrae@gmail.com>
To:        Paul Mather <freebsd-lists@gromit.dlib.vt.edu>
Cc:        Adam McDougall <mcdouga9@egr.msu.edu>, freebsd-stable <freebsd-stable@freebsd.org>
Subject:   Re: 4TB Western Digital My Book 1230 USB hard drive not working on 10.2
Message-ID:  <CAF-3MvOj-qzSvbNyGfWPHKWcWBU15oA=jnDh1nVOetJJECJKaA@mail.gmail.com>
In-Reply-To: <268B6AD7-FCD8-4085-B479-DF8B319860B3@gromit.dlib.vt.edu>
References:  <410CF5C1-2BF7-45E8-9707-12F26C4D62A1@gromit.dlib.vt.edu> <55BEC52A.6080901@egr.msu.edu> <268B6AD7-FCD8-4085-B479-DF8B319860B3@gromit.dlib.vt.edu>

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On 3 August 2015 at 15:01, Paul Mather <freebsd-lists@gromit.dlib.vt.edu> wrote:
> On Aug 2, 2015, at 9:34 PM, Adam McDougall <mcdouga9@egr.msu.edu> wrote:
>
>> On 08/02/2015 21:22, Paul Mather wrote:
>>> I have a 4TB external USB drive (Western Digital My Book 1230) that I am trying to use under FreeBSD/amd64 10.2 (10.2-PRERELEASE #0 r286052: Wed Jul 29 20:59:39 EDT 2015).  This system has a MSI 760GMA-P34 (FX) motherboard.
>>>
>>> The drive probes unreliably when plugged in to a USB 3 port.  It reliably probes when plugged into a USB 2 port.  However, it works in neither cases.  Attempting to dd from the drive results in a "dd: /dev/da0: Invalid argument".

FYI: I had been experiencing the same with a 2 TB WD MyBook on OS X
(Mavericks). The drive was being used for Time Machine backups, but it
would at irregular intervals it would just 'disconnect' itself. My
guess is that there's a firmware problem in the USB3 chip in those
drives.

After trying to get the issue fixed for almost half a year I returned
it and replaced it by a Seagate, which has been working flawlessly
ever since.

I'm just saying, perhaps the problem isn't with FreeBSD but with the drive.

Cheers.



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