我弟弟的外置硬盘（西部数据 500 GB，NTFS 文件系统）出现了问题，他无法在 Windows 7 PC 上读取上面的内容，但是我认为 Windows 可以识别它，因为建议他对其进行格式化。
我告诉他，我会向他展示 Linux (backtrack 5) 的强大功能，并在格式化之前恢复他的数据。问题是，我已经尝试了一个星期，但我认为不会有任何进展。
/var/log/messages这是我插入后得到的结果：
Jun 10 15:45:34 bt kernel: [15909.210843] usb 2-1.2: new high speed USB device using ehci_hcd and address 4
Jun 10 15:45:35 bt kernel: [15910.061906] usbcore: registered new interface driver uas
Jun 10 15:45:35 bt kernel: [15910.069601] Initializing USB Mass Storage driver...
Jun 10 15:45:35 bt kernel: [15910.069792] scsi6 : usb-storage 2-1.2:1.0
Jun 10 15:45:35 bt kernel: [15910.069943] usbcore: registered new interface driver usb-storage
Jun 10 15:45:35 bt kernel: [15910.069945] USB Mass Storage support registered.
Jun 10 15:45:37 bt kernel: [15912.024089] scsi 6:0:0:0: Direct-Access WD My Passport 0730 1015 PQ: 0 ANSI: 6
Jun 10 15:45:37 bt kernel: [15912.025002] scsi 6:0:0:1: Enclosure WD SES Device 1015 PQ: 0 ANSI: 6
Jun 10 15:45:37 bt kernel: [15912.029003] sd 6:0:0:0: Attached scsi generic sg2 type 0
Jun 10 15:45:37 bt kernel: [15912.031516] scsi 6:0:0:1: Attached scsi generic sg3 type 13
Jun 10 15:45:39 bt kernel: [15914.290239] sd 6:0:0:0: [sdb] 976707584 512-byte logical blocks: (500 GB/465 GiB)
Jun 10 15:45:39 bt kernel: [15914.290803] sd 6:0:0:0: [sdb] Write Protect is off
Jun 10 15:45:39 bt kernel: [15914.305408] sdb: sdb1
Jun 10 15:45:39 bt kernel: [15914.307733] sd 6:0:0:0: [sdb] Attached SCSI disk
Jun 10 15:45:39 bt kernel: [15914.434383] ses 6:0:0:1: Attached Enclosure device
Jun 10 15:45:45 bt kernel: [15920.162614] usb 2-1.2: reset high speed USB device using ehci_hcd and address 4
Jun 10 15:45:51 bt kernel: [15926.699493] usb 2-1.2: reset high speed USB device using ehci_hcd and address 4
Jun 10 15:45:58 bt kernel: [15933.236403] usb 2-1.2: reset high speed USB device using ehci_hcd and address 4
Jun 10 15:46:04 bt kernel: [15939.797082] usb 2-1.2: reset high speed USB device using ehci_hcd and address 4
Jun 10 15:46:11 bt kernel: [15946.333884] usb 2-1.2: reset high speed USB device using ehci_hcd and address 4
Jun 10 15:46:18 bt kernel: [15952.870834] usb 2-1.2: reset high speed USB device using ehci_hcd and address 4
Jun 10 15:46:18 bt kernel: [15953.618978] sd 6:0:0:0: [sdb] Unhandled error code
Jun 10 15:46:18 bt kernel: [15953.618988] sd 6:0:0:0: [sdb] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
Jun 10 15:46:18 bt kernel: [15953.618996] sd 6:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 08 08 00 00 08 00
Jun 10 15:46:24 bt kernel: [15959.407728] usb 2-1.2: reset high speed USB device using ehci_hcd and address 4
Jun 10 15:46:31 bt kernel: [15965.956325] usb 2-1.2: reset high speed USB device using ehci_hcd and address 4
Jun 10 15:46:37 bt kernel: [15972.493248] usb 2-1.2: reset high speed USB device using ehci_hcd and address 4
Jun 10 15:46:44 bt kernel: [15979.029990] usb 2-1.2: reset high speed USB device using ehci_hcd and address 4
Jun 10 15:46:50 bt kernel: [15985.566913] usb 2-1.2: reset high speed USB device using ehci_hcd and address 4
Jun 10 15:46:57 bt kernel: [15992.107636] usb 2-1.2: reset high speed USB device using ehci_hcd and address 4
Jun 10 15:46:58 bt kernel: [15992.855867] sd 6:0:0:0: [sdb] Unhandled error code
Jun 10 15:46:58 bt kernel: [15992.855876] sd 6:0:0:0: [sdb] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
Jun 10 15:46:58 bt kernel: [15992.855885] sd 6:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 08 08 00 00 08 00
Jun 10 15:47:03 bt kernel: [15998.688559] usb 2-1.2: reset high speed USB device using ehci_hcd and address 4
Jun 10 15:47:10 bt kernel: [16005.237293] usb 2-1.2: reset high speed USB device using ehci_hcd and address 4
并且它会不断一次又一次地重置。
你可以帮帮我吗？