硬盘挂了， WinPE 快进桌面时卡住，硬盘灯常亮； ubuntu U 盘 能打开硬盘其中一个分区。这是什么故障？

ubuntu 下 SMART 居然是通过...

/dev/sdb 是损坏的硬盘，ubuntu 下只能打开 /dev/sdb2 分区，往外拷文件只有几十k...
fdisk 分区表大体没有问题。

串口线换过了，主板串口也换过了，毫无效果...

是硬件损坏了？有办法拷贝出来文件吗？

ubuntu@ubuntu:~$ df -h
Filesystem Size Used Avail Use% Mounted on
/cow 3.5G 27M 3.5G 1% /
udev 3.5G 8.0K 3.5G 1% /dev
tmpfs 713M 1.3M 712M 1% /run
/dev/sdc1 3.8G 980M 2.8G 26% /cdrom
/dev/loop0 939M 939M 0 100% /rofs
none 4.0K 0 4.0K 0% /sys/fs/cgroup
tmpfs 3.5G 1.1M 3.5G 1% /tmp
none 5.0M 0 5.0M 0% /run/lock
none 3.5G 76K 3.5G 1% /run/shm
none 100M 76K 100M 1% /run/user
/dev/sda2 100G 77G 24G 77% /media/ubuntu/061638EC1638DDFD
/dev/sda3 139G 98G 41G 71% /media/ubuntu/2E80C42D80C3F8FB
/dev/sdb2 102G 62G 41G 61% /media/ubuntu/win7_bak
ubuntu@ubuntu:~$ mount -l
/cow on / type overlayfs (rw)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
/dev/sdc1 on /cdrom type vfat (ro,noatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro) [UUI]
/dev/loop0 on /rofs type squashfs (ro,noatime)
none on /sys/fs/cgroup type tmpfs (rw)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
none on /run/user type tmpfs (rw,noexec,nosuid,nodev,size=104857600,mode=0755)
none on /sys/fs/pstore type pstore (rw)
systemd on /sys/fs/cgroup/systemd type cgroup (rw,noexec,nosuid,nodev,none,name=systemd)
gvfsd-fuse on /run/user/999/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,user=ubuntu)
/dev/sda2 on /media/ubuntu/061638EC1638DDFD type fuseblk (rw,nosuid,nodev,allow_other,default_permissions,blksize=4096)
/dev/sda3 on /media/ubuntu/2E80C42D80C3F8FB type fuseblk (rw,nosuid,nodev,allow_other,default_permissions,blksize=4096)

/dev/sdb2 on /media/ubuntu/win7_bak type fuseblk (rw,nosuid,nodev,allow_other,default_permissions,blksize=4096) [win7_bak]
ubuntu@ubuntu:~$ sudo fdisk /dev/sdb

Command (m for help): p

Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xe9b5e241

Device Boot Start End Blocks Id System
/dev/sdb1 63 2101679 1050808+ 83 Linux
/dev/sdb2 * 2101680 215027711 106463016 7 HPFS/NTFS/exFAT
/dev/sdb3 215030086 1953523711 869246813 f W95 Ext'd (LBA)
/dev/sdb5 215030088 1443825809 614397861 7 HPFS/NTFS/exFAT
/dev/sdb6 1443825873 1953520477 254847302+ 7 HPFS/NTFS/exFAT

Command (m for help): q

ubuntu@ubuntu:~$ sudo smartctl /dev/sdb
smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.13.0-32-generic] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org

ATA device successfully opened

Use 'smartctl -a' (or '-x') to print SMART (and more) information

ubuntu@ubuntu:~$ sudo smartctl -a /dev/sdb
smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.13.0-32-generic] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Device Model: WDC WD10EADX-22TDHB0
Serial Number: WD-WCAV5S194539
LU WWN Device Id: 5 0014ee 205c0bc2b
Firmware Version: 77.04D77
User Capacity: 1,000,204,886,016 bytes [1.00 TB]
Sector Size: 512 bytes logical/physical
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: ATA8-ACS (minor revision not indicated)
SATA Version is: SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Fri Jul 10 02:53:54 2015 UTC
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status: (0x84) Offline data collection activity
was suspended by an interrupting command from host.
Auto Offline Data Collection: Enabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: (21600) seconds.
Offline data collection
capabilities: (0x7b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 248) minutes.
Conveyance self-test routine
recommended polling time: ( 5) minutes.
SCT capabilities: (0x3037) SCT Status supported.
SCT Feature Control supported.
SCT Data Table supported.

SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0
3 Spin_Up_Time 0x0027 199 177 021 Pre-fail Always - 6025
4 Start_Stop_Count 0x0032 095 095 000 Old_age Always - 5137
5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0
7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0
9 Power_On_Hours 0x0032 079 079 000 Old_age Always - 15740
10 Spin_Retry_Count 0x0032 100 100 000 Old_age Always - 0
11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 0
12 Power_Cycle_Count 0x0032 097 097 000 Old_age Always - 3669
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 435
193 Load_Cycle_Count 0x0032 110 110 000 Old_age Always - 272975
194 Temperature_Celsius 0x0022 110 098 000 Old_age Always - 37
196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 77
198 Offline_Uncorrectable 0x0030 200 200 000 Old_age Offline - 6
199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 6339
200 Multi_Zone_Error_Rate 0x0008 193 095 000 Old_age Offline - 1433

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
No self-tests have been logged. [To run self-tests, use: smartctl -t]

SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.