Unable to access external hard drive

[Hermes14]

Apologies for the late post, we had a thunder storm last night & my internet dropped to a speed where the web page was timing out before I could post.

@robin_listas

Try “smartctl -a /dev/sdb” and post it here, too.

–
Cheers / Saludos,

Carlos E. R.
(from 13.1 x86_64 “Bottle” at Telcontar)

Model Family?
Shouldn’t that say Transcend?
I have only connected my segate external hard drive to this computer when I made an extra copy of my root directory in 13.1 before I upgraded to 13.2 which was about 15 November.

 linux-qe07:/home/warren # smartctl -a /dev/sdb
smartctl 6.3 2014-07-26 r3976 [x86_64-linux-3.16.6-2-desktop] (SUSE RPM)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Seagate Barracuda LP
Device Model:     ST31000520AS
Serial Number:    6VX0LC50
LU WWN Device Id: 5 000c50 01b7e58c2
Firmware Version: CC32
User Capacity:    1,000,204,886,016 bytes [1.00 TB]
Sector Size:      512 bytes logical/physical
Rotation Rate:    5900 rpm
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ATA8-ACS T13/1699-D revision 4
SATA Version is:  SATA 2.6, 3.0 Gb/s
Local Time is:    Sun Nov 30 18:17:51 2014 WAST

==> WARNING: A firmware update for this drive may be available,
see the following Seagate web pages:
http://knowledge.seagate.com/articles/en_US/FAQ/207931en
http://knowledge.seagate.com/articles/en_US/FAQ/213915en

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:  (0x00) Offline data collection activity
                                        was never started.
                                        Auto Offline Data Collection: Disabled.
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:                (  623) seconds.
Offline data collection                                                                                                                                                         
capabilities:                    (0x73) SMART execute Offline immediate.                                                                                                        
                                        Auto Offline data collection on/off support.                                                                                            
                                        Suspend Offline collection upon new                                                                                                     
                                        command.                                                                                                                                
                                        No 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:        (   1) minutes.                                                                                                                                
Extended self-test routine                                                                                                                                                      
recommended polling time:        ( 214) minutes.                                                                                                                                
Conveyance self-test routine                                                                                                                                                    
recommended polling time:        (   2) minutes.                                                                                                                                
SCT capabilities:              (0x103f) SCT Status supported.                                                                                                                   
                                        SCT Error Recovery Control supported.                                                                                                   
                                        SCT Feature Control supported.                                                                                                          
                                        SCT Data Table supported.                                                                                                                
SMART Attributes Data Structure revision number: 10                                                                                                                             
Vendor Specific SMART Attributes with Thresholds:                                                                                                                               
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE                                                                                
  1 Raw_Read_Error_Rate     0x000f   114   099   006    Pre-fail  Always       -       78637223                                                                                 
  3 Spin_Up_Time            0x0003   096   095   000    Pre-fail  Always       -       0                                                                                        
  4 Start_Stop_Count        0x0032   099   099   020    Old_age   Always       -       1646                                                                                     
  5 Reallocated_Sector_Ct   0x0033   100   100   036    Pre-fail  Always       -       0                                                                                        
  7 Seek_Error_Rate         0x000f   069   060   030    Pre-fail  Always       -       7824181                                                                                  
  9 Power_On_Hours          0x0032   079   079   000    Old_age   Always       -       18724
 10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   100   100   020    Old_age   Always       -       823
183 Runtime_Bad_Block       0x0032   100   100   000    Old_age   Always       -       0
184 End-to-End_Error        0x0032   100   100   099    Old_age   Always       -       0
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always       -       0
188 Command_Timeout         0x0032   100   099   000    Old_age   Always       -       65538
189 High_Fly_Writes         0x003a   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   065   055   045    Old_age   Always       -       35 (Min/Max 35/35)
194 Temperature_Celsius     0x0022   035   045   000    Old_age   Always       -       35 (0 12 0 0 0)
195 Hardware_ECC_Recovered  0x001a   026   024   000    Old_age   Always       -       78637223
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0010   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       0
240 Head_Flying_Hours       0x0000   100   253   000    Old_age   Offline      -       12905 (248 116 0)
241 Total_LBAs_Written      0x0000   100   253   000    Old_age   Offline      -       125320666
242 Total_LBAs_Read         0x0000   100   253   000    Old_age   Offline      -       2780248594

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. 

@gogalthorp

If a file system is written direct to a device without a partition table the partition tools will not show anything.

Not sure why the OP does not seem to want to have a partition table. The way I read it he was writing a file system direct to a device not having a partition. Even so the device should show up

I was using my Transcend external on my laptop aswell & assumed that if I create a filesystem on my Transcend I wouldn’t be able to see my files from my Laptop.

[susejunky]

Hi robin_listas,

@robin_listas

Suppose you have “somefile”, of exactly 123456 bytes in length. Then do,
on a device that you can delete entirely for the test:

cp somefile /dev/sdX

this destroys the partition table, replaced with the start of the file.

dd if=/dev/sdX of=somefile_copy bs=123456 count=1

And that recovers an exact copy of the file.

Yes, indeed. Although i have not tested it yet, i would expect that to work exactly as you described it.

My statement

@susejunky

Therefore a single file might be splattered across the whole disk (former partition). So it would not be enough to know the exact size and starting point of a file to retrieve it correctly.

was not meant to refer to the file, which destroys the partition table, but to any other file within that partition (and which was written to the partition in a “normal” manner before the partition table got overwritten).

Sorry, but English is not my mother tongue. This causes me problems to describe my thoughts precise enough for others to understand them :shame: (Still work in progress …).

However, so far we have discussed many possible solutions, but when will we know the exact problem and the circumstances yielding it …

Best regards

susejunky

[Fraser_Bell]

@susejunky

Sorry, but English is not my mother tongue. This causes me problems to describe my thoughts precise enough for others to understand them :shame: (Still work in progress …).

… and even if you did, it still does not always mean that others will understand. Sometimes our minds are walking in different directions on different paths, and a precise description can be altered by the different panoramic view! lol!

[robin_listas]

On 2014-12-02 09:36, susejunky wrote:

> My statementsusejunky;2679950 Wrote:
>>
>> Therefore a single file might be splattered across the whole disk
>> (former partition). So it would not be enough to know the exact size and
>> starting point of a file to retrieve it correctly.

> was not meant to refer to the file, which destroys the partition table,
> but to any other file within that partition (and which was written to
> the partition in a “normal” manner before the partition table got
> overwritten).

Ah, yes, in that case the file could be anywhere, contiguous or
splattered

> Sorry, but English is not my mother tongue. This causes me problems to
> describe my thoughts precise enough for others to understand them
> :shame: (Still work in progress …).

Happens to me a lot. English is not my mother language either, nor is my
culture. Causes many misunderstandings.

> However, so far we have discussed many possible solutions, but when will
> we know the exact problem and the circumstances yielding it …

Yes, we do not know what happened.

–
Cheers / Saludos,

Carlos E. R.
(from 13.1 x86_64 “Bottle” at Telcontar)

[robin_listas]

On 2014-12-01 09:36, Hermes14 wrote:
>
> Apologies for the late post, we had a thunder storm last night & my
> internet dropped to a speed where the web page was timing out before I
> could post.

It happens…

> Model Family?
> Shouldn’t that say Transcend?
> I have only connected my segate external hard drive to this computer
> when I made an extra copy of my root directory in 13.1 before I upgraded
> to 13.2 which was about 15 November.

Well, I see a problem here, because the model smartctl sees is
“ST31000520AS”, and what “lsblk” saw was “Transcend”. The string should
be the same.

So there is something very confusing about your setup. My guess is that
you are not writing the correct commands.

By the way, your seagate disk is old (18724 hours), but you have never
tested it, thus the health report is not that reliable.

–
Cheers / Saludos,

Carlos E. R.
(from 13.1 x86_64 “Bottle” at Telcontar)

[Fraser_Bell]

@Hermes14

Model Family?
Shouldn’t that say Transcend?
I have only connected my segate external hard drive to this computer when I made an extra copy of my root directory in 13.1 before I upgraded to 13.2 which was about 15 November.

Now, that is strange.