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my hdd failing (or maybe totally dead) i've connected the hdd via USB but it doesn't appear in fdisk

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0xe9fb38fb

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048      206847      102400    7  HPFS/NTFS/exFAT
/dev/sda2          206848    40959999    20376576    7  HPFS/NTFS/exFAT
/dev/sda4        40962046   976771071   467904513    5  Extended
Partition 4 does not start on physical sector boundary.
/dev/sda5        82913280    86910975     1998848   82  Linux swap / Solaris
/dev/sda6        86913024   394113023   153600000    7  HPFS/NTFS/exFAT
/dev/sda7        40962048    82913279    20975616   83  Linux
/dev/sda8       394122708   976768064   291322678+   7  HPFS/NTFS/exFAT
Partition 8 does not start on physical sector boundary.

no sdc appears here , BUT it's appears on /dev/

rootghost-lap:/home/ghost# ls /dev/sd*
/dev/sda   /dev/sda2  /dev/sda5  /dev/sda8  /dev/sdb  /dev/sdc1   /dev/sdc2  /dev/sdc6  /dev/sdc8
/dev/sda1  /dev/sda4  /dev/sda6  /dev/sda9  /dev/sdc  /dev/sdc10  /dev/sdc5  /dev/sdc7  /dev/sdc9

also it appears in proc Code:

rootghost-lap:/home/ghost# cat /proc/partitions 
major minor  #blocks  name

   8        0  488386584 sda
   8        1     102400 sda1
   8        2   20376576 sda2
   8        4          1 sda4
   8        5    1998848 sda5
   8        6  153600000 sda6
   8        8  291322678 sda8
   8        9   20975616 sda9
  11        0    1048575 sr0
  11        1      99136 sr1
   8       32  244198583 sdc
   8       33   14651248 sdc1
   8       34          1 sdc2
   8       37   15380480 sdc5
   8       38    4153344 sdc6
   8       39   48829536 sdc7
   8       40   48829536 sdc8
   8       41  110374551 sdc9
   8       42    1975963 sdc10

and dmesg :

[10604.777168] end_request: I/O error, dev sdc, sector 1 
[10604.817238] sd 26:0:0:0: [sdc]  Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE 
[10604.817243] sd 26:0:0:0: [sdc]  Sense Key : Aborted Command [current]  
[10604.817248] sd 26:0:0:0: [sdc]  Add. Sense: No additional sense information 
[10604.817253] sd 26:0:0:0: [sdc] CDB: Read(10): 28 00 00 00 00 02 00 00 06 00

ok now , let's see what i've tried testdisk to check for partitions -- failed dd to copy data from /dev/sdcX -- provide strange output size for example /dev/sdc1 is about 15G , the output for dd is 62G+ so i had to cancle it safecopy successfully made an image for partitons , but can't fix images, can't mount it, can't do any thing with it

and some other tools i've tried and all failed , so any idea ?

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closed as off topic by Chopper3, SmallClanger, Khaled, Ward, voretaq7 Jun 24 '12 at 7:16

Questions on Server Fault are expected to relate to professional server, networking, or related infrastructure administration within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here.If this question can be reworded to fit the rules in the help center, please edit the question.

    
What do you get from 'fdisk -l /dev/sdc'? If no partitions are found, this may indicate corrupted partition table. –  Khaled Jun 22 '12 at 13:47
1  
Read our FAQ, totally inappropriate question for this site. –  Chopper3 Jun 22 '12 at 13:49
    
@Khaled fdisk can't see sdc , buf sfdisk see it with error sfdisk: read error on /dev/sdc - cannot read sector 0 –  Eslam Elyamany Jun 22 '12 at 13:58
    
Is this on a personal machine, or a machine you are managing professionally within the scope of the FAQ? –  voretaq7 Jun 22 '12 at 16:14
    
@voretaq7 it's personal machine i use to manage server throw , all servers data on that hdd , i think i'll have to go to data recovery company –  Eslam Elyamany Jun 23 '12 at 8:38

1 Answer 1

Your drive is toast. The best we can tell you to do is replace it and restore from backups.
(If you don't have backups now would be a good time to contact a data recovery company)

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