Re: Western Digital Elements 2620 not shown on the 400 MByte port

Thanks for your long reply. I tried another USB cable of a working USB
disk, without any change.

I tried another FreeBSD 15.x laptop, where it says on attach:

# uname -a
FreeBSD ASUS-150 15.0-CURRENT FreeBSD 15.0-CURRENT #0 main-n275738-7ee310c80ea7: Sun Mar  2 01:13:00 CET 2025     guru@jet:/usr/obj/usr/src/amd64.amd64/sys/GENERIC amd64

Aug  6 00:12:11 ASUS-150 kernel: usb_msc_auto_quirk: UQ_MSC_NO_GETMAXLUN set for USB mass storage device Western Digital Elements 2620 (0x1058:0x2620)
Aug  6 00:12:11 ASUS-150 kernel: usb_msc_auto_quirk: UQ_MSC_NO_TEST_UNIT_READY set for USB mass storage device Western Digital Elements 2620 (0x1058:0x2620)
Aug  6 00:12:11 ASUS-150 kernel: usb_msc_auto_quirk: UQ_MSC_NO_PREVENT_ALLOW set for USB mass storage device Western Digital Elements 2620 (0x1058:0x2620)
Aug  6 00:12:13 ASUS-150 kernel: usb_msc_auto_quirk: UQ_MSC_NO_SYNC_CACHE set for USB mass storage device Western Digital Elements 2620 (0x1058:0x2620)
Aug  6 00:12:13 ASUS-150 kernel: usb_msc_auto_quirk: UQ_MSC_NO_PREVENT_ALLOW set for USB mass storage device Western Digital Elements 2620 (0x1058:0x2620)
Aug  6 00:12:13 ASUS-150 kernel: usb_msc_auto_quirk: UQ_MSC_NO_TEST_UNIT_READY set for USB mass storage device Western Digital Elements 2620 (0x1058:0x2620)
Aug  6 00:12:13 ASUS-150 kernel: usb_msc_auto_quirk: UQ_MSC_NO_START_STOP set for USB mass storage device Western Digital Elements 2620 (0x1058:0x2620)
Aug  6 00:12:13 ASUS-150 kernel: ugen0.2: <Western Digital Elements 2620> at usbus0
Aug  6 00:12:13 ASUS-150 kernel: umass0 on uhub0
Aug  6 00:12:13 ASUS-150 kernel: umass0: <Western Digital Elements 2620, class 0/0, rev 3.20/10.23, addr 1> on usbus0
Aug  6 00:12:13 ASUS-150 kernel: umass0:  SCSI over Bulk-Only; quirks = 0xc105<NO_TEST_UNIT_READY,NO_START_STOP,NO_GETMAXLUN,NO_SYNCHRONIZE_CACHE,NO_PREVENT_ALLOW>
Aug  6 00:12:13 ASUS-150 kernel: umass0:3:0: Attached to scbus3
Aug  6 00:12:13 ASUS-150 kernel: da0 at umass-sim0 bus 0 scbus3 target 0 lun 0
Aug  6 00:12:13 ASUS-150 kernel: da0: <WD Elements 2620 1023> Fixed Direct Access SPC-4 SCSI device
Aug  6 00:12:13 ASUS-150 kernel: da0: Serial Number 575838324137344831564E50
Aug  6 00:12:13 ASUS-150 kernel: da0: 400.000MB/s transfers
Aug  6 00:12:13 ASUS-150 kernel: da0: 1907697MB (3906963456 512 byte sectors)
Aug  6 00:12:13 ASUS-150 kernel: da0: quirks=0x2<NO_6_BYTE>

Don't worry about the date and time. It's clock is not synced.

On copy of a big file it gives only ~40 MByte per second to a NTFS file
system:

# dd if=... of=/dev/null bs=8m

165+1 records in
165+1 records out
1385932527 bytes transferred in 0.133685 secs (10367182543 bytes/sec)

i.e. it's not a local read problem, but write over USB:

# dd if=... of=/mnt/test bs=8m
165+1 records in
165+1 records out
1385932527 bytes transferred in 33.873874 secs (40914498 bytes/sec)


	matthias
-- 
Matthias Apitz, ✉ guru@unixarea.de, http://www.unixarea.de/ +49-176-38902045
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