I don't know if this is the correct place for this problem, but you people can probably tell me the correct place. I have two "USB to SATA adapter" dongles. In general, they work fine. However I've discovered that one of them handles large (1 TB and above) drives correctly and one does not. In particular, when I use the unsuccessful one, neither fdisk nor gdisk reports the disk size correctly, and the kernel does not read the partition table. More confusingly, both dongles work correctly with large disks on Windows 7 Professional. Both of the following cases are when a 3.0 TB drive is attached. The successful device has the "Diablo" brand. The most interesting messages in the log when I plug in the USB are (the complete message set is appended below): Aug 18 21:56:53 hobgoblin kernel: [ 294.229462] usb 2-1.3: New USB device found, idVendor=152d, idProduct=2338 Aug 18 21:56:53 hobgoblin kernel: [ 294.229475] usb 2-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=5 Aug 18 21:56:53 hobgoblin kernel: [ 294.229482] usb 2-1.3: Product: USB to ATA/ATAPI bridge Aug 18 21:56:53 hobgoblin kernel: [ 294.229488] usb 2-1.3: Manufacturer: JMicron Aug 18 21:56:53 hobgoblin kernel: [ 294.229495] usb 2-1.3: SerialNumber: 000001D91CC4 Aug 18 21:56:54 hobgoblin kernel: [ 295.236576] sd 7:0:0:0: [sdb] Very big device. Trying to use READ CAPACITY(16). Aug 18 21:56:54 hobgoblin kernel: [ 295.236955] sd 7:0:0:0: [sdb] 5860533168 512-byte logical blocks: (3.00 TB/2.72 TiB) The unsuccessful device has the "Ez-Connect" brand. The most interesting messages in the log when I plug in the USB are (the complete message set is appended below): Aug 18 21:54:06 hobgoblin kernel: [ 127.674374] usb 2-2: new high-speed USB device number 4 using ehci-pci Aug 18 21:54:06 hobgoblin kernel: [ 127.791128] usb 2-2: New USB device found, idVendor=05e3, idProduct=0718 Aug 18 21:54:06 hobgoblin kernel: [ 127.791135] usb 2-2: New USB device strings: Mfr=0, Product=1, SerialNumber=2 Aug 18 21:54:06 hobgoblin kernel: [ 127.791138] usb 2-2: Product: USB Storage Aug 18 21:54:06 hobgoblin kernel: [ 127.791142] usb 2-2: SerialNumber: 000000000033 Aug 18 21:54:07 hobgoblin kernel: [ 128.847269] sd 6:0:0:0: [sdb] 1565565872 512-byte logical blocks: (801 GB/746 GiB) Dale ---------------------------------------------------------------------- For the Diablo adapter: Aug 18 21:56:53 hobgoblin kernel: [ 294.153343] usb 2-1.3: new high-speed USB device number 5 using ehci-pci Aug 18 21:56:53 hobgoblin kernel: [ 294.229462] usb 2-1.3: New USB device found, idVendor=152d, idProduct=2338 Aug 18 21:56:53 hobgoblin kernel: [ 294.229475] usb 2-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=5 Aug 18 21:56:53 hobgoblin kernel: [ 294.229482] usb 2-1.3: Product: USB to ATA/ATAPI bridge Aug 18 21:56:53 hobgoblin kernel: [ 294.229488] usb 2-1.3: Manufacturer: JMicron Aug 18 21:56:53 hobgoblin kernel: [ 294.229495] usb 2-1.3: SerialNumber: 000001D91CC4 Aug 18 21:56:53 hobgoblin kernel: [ 294.231159] usb-storage 2-1.3:1.0: USB Mass Storage device detected Aug 18 21:56:53 hobgoblin kernel: [ 294.233951] scsi7 : usb-storage 2-1.3:1.0 Aug 18 21:56:53 hobgoblin mtp-probe: checking bus 2, device 5: "/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1.3" Aug 18 21:56:53 hobgoblin mtp-probe: bus: 2, device: 5 was not an MTP device Aug 18 21:56:54 hobgoblin kernel: [ 295.235735] scsi 7:0:0:0: Direct-Access WDC WD30 EZRX-00SPEB0 PQ: 0 ANSI: 5 Aug 18 21:56:54 hobgoblin kernel: [ 295.236209] sd 7:0:0:0: Attached scsi generic sg2 type 0 Aug 18 21:56:54 hobgoblin kernel: [ 295.236576] sd 7:0:0:0: [sdb] Very big device. Trying to use READ CAPACITY(16). Aug 18 21:56:54 hobgoblin kernel: [ 295.236955] sd 7:0:0:0: [sdb] 5860533168 512-byte logical blocks: (3.00 TB/2.72 TiB) Aug 18 21:56:54 hobgoblin kernel: [ 295.237957] sd 7:0:0:0: [sdb] Write Protect is off Aug 18 21:56:54 hobgoblin kernel: [ 295.238957] sd 7:0:0:0: [sdb] No Caching mode page found Aug 18 21:56:54 hobgoblin kernel: [ 295.238962] sd 7:0:0:0: [sdb] Assuming drive cache: write through Aug 18 21:56:54 hobgoblin kernel: [ 295.239956] sd 7:0:0:0: [sdb] Very big device. Trying to use READ CAPACITY(16). Aug 18 21:56:54 hobgoblin kernel: [ 295.242334] sd 7:0:0:0: [sdb] No Caching mode page found Aug 18 21:56:54 hobgoblin kernel: [ 295.242339] sd 7:0:0:0: [sdb] Assuming drive cache: write through Aug 18 21:56:54 hobgoblin kernel: [ 295.305631] GPT:Primary header thinks Alt. header is not at the end of the disk. Aug 18 21:56:54 hobgoblin kernel: [ 295.305638] GPT:1565565871 != 5860533167 Aug 18 21:56:54 hobgoblin kernel: [ 295.305639] GPT:Alternate GPT header not at the end of the disk. Aug 18 21:56:54 hobgoblin kernel: [ 295.305640] GPT:1565565871 != 5860533167 Aug 18 21:56:54 hobgoblin kernel: [ 295.305642] GPT: Use GNU Parted to correct GPT errors. Aug 18 21:56:54 hobgoblin kernel: [ 295.305653] sdb: sdb1 sdb2 sdb3 sdb4 Aug 18 21:56:54 hobgoblin kernel: [ 295.308235] sd 7:0:0:0: [sdb] Very big device. Trying to use READ CAPACITY(16). Aug 18 21:56:54 hobgoblin kernel: [ 295.310974] sd 7:0:0:0: [sdb] No Caching mode page found Aug 18 21:56:54 hobgoblin kernel: [ 295.310980] sd 7:0:0:0: [sdb] Assuming drive cache: write through Aug 18 21:56:54 hobgoblin kernel: [ 295.310984] sd 7:0:0:0: [sdb] Attached SCSI disk ---------------------------------------------------------------------- For the Ez-Connect adapter: Aug 18 21:54:06 hobgoblin kernel: [ 127.674374] usb 2-2: new high-speed USB device number 4 using ehci-pci Aug 18 21:54:06 hobgoblin kernel: [ 127.791128] usb 2-2: New USB device found, idVendor=05e3, idProduct=0718 Aug 18 21:54:06 hobgoblin kernel: [ 127.791135] usb 2-2: New USB device strings: Mfr=0, Product=1, SerialNumber=2 Aug 18 21:54:06 hobgoblin kernel: [ 127.791138] usb 2-2: Product: USB Storage Aug 18 21:54:06 hobgoblin kernel: [ 127.791142] usb 2-2: SerialNumber: 000000000033 Aug 18 21:54:06 hobgoblin mtp-probe: checking bus 2, device 4: "/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-2" Aug 18 21:54:06 hobgoblin mtp-probe: bus: 2, device: 4 was not an MTP device Aug 18 21:54:06 hobgoblin kernel: [ 127.839825] usb-storage 2-2:1.0: USB Mass Storage device detected Aug 18 21:54:06 hobgoblin kernel: [ 127.839917] scsi6 : usb-storage 2-2:1.0 Aug 18 21:54:06 hobgoblin kernel: [ 127.840721] usbcore: registered new interface driver usb-storage Aug 18 21:54:07 hobgoblin kernel: [ 128.844942] scsi 6:0:0:0: Direct-Access WDC WD30 EZRX-00SPEB0 0041 PQ: 0 ANSI: 0 Aug 18 21:54:07 hobgoblin kernel: [ 128.846146] sd 6:0:0:0: Attached scsi generic sg2 type 0 Aug 18 21:54:07 hobgoblin kernel: [ 128.847269] sd 6:0:0:0: [sdb] 1565565872 512-byte logical blocks: (801 GB/746 GiB) Aug 18 21:54:07 hobgoblin kernel: [ 128.848303] sd 6:0:0:0: [sdb] Write Protect is off Aug 18 21:54:07 hobgoblin kernel: [ 128.849389] sd 6:0:0:0: [sdb] No Caching mode page found Aug 18 21:54:07 hobgoblin kernel: [ 128.849398] sd 6:0:0:0: [sdb] Assuming drive cache: write through Aug 18 21:54:07 hobgoblin kernel: [ 128.853028] sd 6:0:0:0: [sdb] No Caching mode page found Aug 18 21:54:07 hobgoblin kernel: [ 128.853038] sd 6:0:0:0: [sdb] Assuming drive cache: write through Aug 18 21:54:08 hobgoblin kernel: [ 129.638416] sdb: sdb1 sdb2 sdb3 Aug 18 21:54:08 hobgoblin kernel: [ 129.641877] sd 6:0:0:0: [sdb] No Caching mode page found Aug 18 21:54:08 hobgoblin kernel: [ 129.641884] sd 6:0:0:0: [sdb] Assuming drive cache: write through Aug 18 21:54:08 hobgoblin kernel: [ 129.641889] sd 6:0:0:0: [sdb] Attached SCSI disk ---------------------------------------------------------------------- -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
