On Aug 3, 2015, at 11:09 AM, Alban Hertroys <haram...@gmail.com> wrote:
> On 3 August 2015 at 15:01, Paul Mather <freebsd-li...@gromit.dlib.vt.edu> > wrote: >> On Aug 2, 2015, at 9:34 PM, Adam McDougall <mcdou...@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. I'd love just to get to the "randomly disconnects" stage under FreeBSD at this point. :-) Up to now, I have been unable to read ANY data off the drive under FreeBSD, either via USB 2 or USB 3. :-( However, you have given me something to think about: does anyone know of a 4 TB USB 2 or 3 drive that will work reliably under FreeBSD 10-STABLE right now? Cheers, Paul. _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
