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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