There is a special version of dd that will retry on bad sectors and try
to formulate a best guess for the bad sector. I've used it with some
success - took about 2 weeks to recover a 300GB drive. I also had to
keep it refrigerated.
Regards,
George Toft
On 12/19/2015 9:32 AM, Stephen Partington wrote:
>
> There is an application called test disk that might be handy for data
> recovery. But this looks like your drive is in bad shape.
>
> On Dec 19, 2015 9:25 AM, "Mark Phillips" <mark@phillipsmarketing.biz
> <mailto:mark@phillipsmarketing.biz>> wrote:
>
> I have a 2 TB WD USB drive that I formated with NTFS. I have a
> rather extensive movie/TV library on it for my plex media server,
> and I am getting read errors. I hope I haven't lost all of that
> data! It has been attached to one of my Netgear wireless access
> points, hence the need for NTFS.
>
> fdisk -l gives for the drive
> /dev/sdc1 2048 3906963455 1953480704 7 HPFS/NTFS/exFAT
>
> I tried running smartctl on the device, (which is now plugged into
> a usb 3.0 port on my laptop) and got this error after a few tests
>
> SMART Self-test log structure revision number 1
> Num Test_Description Status Remaining LifeTime(hours)
> LBA_of_first_error
> # 1 Short offline Completed: read failure 90%
> 10086 494859396
> # 2 Extended offline Completed: read failure 90%
> 10073 494859396
> # 3 Extended offline Completed: read failure 90%
> 10072 494859396
> # 4 Short offline Completed: read failure 90%
> 10072 494859396
>
> I noticed this in the attributes section of smartctl -
> 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 - 122
> 3 Spin_Up_Time 0x0027 202 200 021 Pre-fail
> Always - 4891
> 4 Start_Stop_Count 0x0032 100 100 000 Old_age
> Always - 464
> 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail
> Always - 0
> 7 Seek_Error_Rate 0x002e 100 253 000 Old_age
> Always - 0
> 9 Power_On_Hours 0x0032 087 087 000 Old_age
> Always - 10086
> 10 Spin_Retry_Count 0x0032 100 100 000 Old_age
> Always - 0
> 11 Calibration_Retry_Count 0x0032 100 253 000 Old_age
> Always - 0
> 12 Power_Cycle_Count 0x0032 100 100 000 Old_age
> Always - 40
> 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age
> Always - 17
> 193 Load_Cycle_Count 0x0032 198 198 000 Old_age
> Always - 6187
> 194 Temperature_Celsius 0x0022 121 102 000 Old_age
> Always - 31
> 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age
> Always - 0
> 197 Current_Pending_Sector 0x0032 200 200 000 Old_age
> Always - 31
> 198 Offline_Uncorrectable 0x0030 100 253 000 Old_age
> Offline - 0
> 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age
> Always - 0
> 200 Multi_Zone_Error_Rate 0x0008 100 253 000 Old_age
> Offline - 0
>
> Any thoughts on how I can fix this drive, or do I need to get a
> new one? What is the best way to copy the contents of the drive
> with these errors to a new drive?
>
> Thanks!
>
> Mark
>
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