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".

When plugged in to a USB 2 port, this is how the drive is probed:

ugen6.2: <Western Digital> at usbus6
umass0: <Western Digital My Book 1230, class 0/0, rev 2.10/10.65, addr 2> on 
usbus6
umass0:  SCSI over Bulk-Only; quirks = 0xc001
umass0:9:0:-1: Attached to scbus9
da0 at umass-sim0 bus 0 scbus9 target 0 lun 0
da0: <WD My Book 1230 1065> Fixed Direct Access SPC-4 SCSI device
da0: Serial Number 57434334453056594A4C4A4A
da0: 40.000MB/s transfers
da0: 3815415MB (976746240 4096 byte sectors: 255H 63S/T 60799C)
da0: quirks=0x2<NO_6_BYTE>
ses0 at umass-sim0 bus 0 scbus9 target 0 lun 1
ses0: <WD SES Device 1065> Fixed Enclosure Services SPC-4 SCSI device
ses0: Serial Number 57434334453056594A4C4A4A
ses0: 40.000MB/s transfers
ses0: SCSI-3 ENC Device

When booting with it connected to a USB 3 port, this is what is output:

xhci0: <XHCI (generic) USB 3.0 controller> mem 0xfeafe000-0xfeafffff irq 18 at 
device 0.0 on pci3
xhci0: 64 bytes context size, 64-bit DMA
usbus0 on xhci0
[[...]]
ohci0: <AMD SB7x0/SB8x0/SB9x0 USB controller> mem 0xfe7fe000-0xfe7fefff irq 16 
at device 18.0 on pci0
usbus1 on ohci0
ohci1: <AMD SB7x0/SB8x0/SB9x0 USB controller> mem 0xfe7fd000-0xfe7fdfff irq 16 
at device 18.1 on pci0
usbus2 on ohci1
ehci0: <AMD SB7x0/SB8x0/SB9x0 USB 2.0 controller> mem 0xfe7ff800-0xfe7ff8ff irq 
17 at device 18.2 on pci0
usbus3: EHCI version 1.0
usbus3 on ehci0
ohci2: <AMD SB7x0/SB8x0/SB9x0 USB controller> mem 0xfe7fc000-0xfe7fcfff irq 18 
at device 19.0 on pci0
usbus4 on ohci2
ohci3: <AMD SB7x0/SB8x0/SB9x0 USB controller> mem 0xfe7f7000-0xfe7f7fff irq 18 
at device 19.1 on pci0
usbus5 on ohci3
ehci1: <AMD SB7x0/SB8x0/SB9x0 USB 2.0 controller> mem 0xfe7ff400-0xfe7ff4ff irq 
19 at device 19.2 on pci0
usbus6: EHCI version 1.0
usbus6 on ehci1
[[...]]
ohci4: <AMD SB7x0/SB8x0/SB9x0 USB controller> mem 0xfe7f6000-0xfe7f6fff irq 18 
at device 20.5 on pci0
usbus7 on ohci4
[[...]]
usbus0: 5.0Gbps Super Speed USB v3.0
usbus1: 12Mbps Full Speed USB v1.0
usbus2: 12Mbps Full Speed USB v1.0
usbus3: 480Mbps High Speed USB v2.0
usbus4: 12Mbps Full Speed USB v1.0
usbus5: 12Mbps Full Speed USB v1.0
usbus6: 480Mbps High Speed USB v2.0
usbus7: 12Mbps Full Speed USB v1.0
ugen7.1: <ATI> at usbus7
uhub0: <ATI OHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus7
ugen6.1: <ATI> at usbus6
uhub1: <ATI EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus6
ugen5.1: <ATI> at usbus5
uhub2: <ATI OHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus5
ugen4.1: <ATI> at usbus4
uhub3: <ATI OHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus4
ugen3.1: <ATI> at usbus3
uhub4: <ATI EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus3
ugen2.1: <ATI> at usbus2
uhub5: <ATI OHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus2
ugen1.1: <ATI> at usbus1
uhub6: <ATI OHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus1
ugen0.1: <0x1912> at usbus0
uhub7: <0x1912 XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
uhub0: 2 ports with 2 removable, self powered
uhub2: 3 ports with 3 removable, self powered
uhub3: 3 ports with 3 removable, self powered
uhub5: 3 ports with 3 removable, self powered
uhub6: 3 ports with 3 removable, self powered
uhub7: 8 ports with 8 removable, self powered
[[...]]
Root mount waiting for: usbus6 usbus3 usbus0
Root mount waiting for: usbus6 usbus3 usbus0
uhub1: 6 ports with 6 removable, self powered
uhub4: 6 ports with 6 removable, self powered
ugen0.2: <vendor 0x1058> at usbus0
umass0: <vendor 0x1058 product 0x1230, class 0/0, rev 3.00/10.65, addr 1> on 
usbus0
umass0:  SCSI over Bulk-Only; quirks = 0x8000
Root mount waiting for: usbus0
[[...]]
Root mount waiting for: usbus0
Root mount waiting for: usbus0
umass0: Get Max Lun not supported (USB_ERR_TIMEOUT)
umass0:9:0:-1: Attached to scbus9
[[...]]
da0 at umass-sim0 bus 0 scbus9 target 0 lun 0
da0: <  > Fixed Direct Access SCSI device
da0: Serial Number WCC4E0VYJLJJ
da0: 400.000MB/s transfers
da0: 3815415MB (976746240 4096 byte sectors: 255H 63S/T 60799C)
da0: quirks=0x2<NO_6_BYTE>


This external USB drive works fine under OSX Yosemite and also when plugged in 
to my Raspberry Pi 2 running OSMC.

Is there anyone using this model of USB drive under FreeBSD/amd64 10.2?  Is it 
a matter of finding the correct quirk to get it working?

Cheers,

Paul.



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