Partition recovery for an external HD

How to use TestDisk to recover lost partition
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Radam9
Posts: 2
Joined: 13 Oct 2013, 14:56

Partition recovery for an external HD

#1 Post by Radam9 » 13 Oct 2013, 15:21

Hi there,

So i will get straight to the point :D ,

I have a 3TB External WD My Book. 2 days ago it started getting very very slow with all functions i do (copying, opening folders..etc), then it died on me, the pc doesnt read the hard drive.

what i did:

i removed the HD from the case and connected it directly to the pc using a sata-esata connection, and i tried many programs and followed many tutorials to fix it without any use, (the HD just shows as unallocated, then i changed it to RAW and tried other apps but also couldnt reach anything.)
I then thought why not try to connect it again using the External HD chip, and connected it as a USB external drive, so i did and it didnt show on my pc, i then used "Mini tool partition wizard" to do a partition recovery and it worked !!.
i checked my pc, but unfortunately the HD doesnt show , it still shows as unlocated in the Disk Manager.
so i go and give TestDisk a try
i start with Create>
then when i will select the Drive, the drive appears twice
Image
i choose the first one (Disk /dev/sdb - 3000 GB / 2794 GiB - WD My Book 1140) cause it looks like the main Drive in the laptop
Intel>Analyse>
Image
Quick Search>
Image
Continue>Write>Y
Image

Now i am stuck and dont know what to do to fix the problem, i tried copying one of the files to another HD and the file was perfectly fine.
Any help would be greatly appreciated, i have about 1.5TB on the HD and would like to save it :S
Sorry for the long read, any info needed will be given asap.
Thanks.

Update: ok so after restarting my PC i find that the HD is readable again, but there is only 1 big folder that contains all my videos (700GB) that is corrupted, the folders are there if i access the HD from the windows explorer, but then the windows freezes and bugs out, if i access the folder from testdisk, it is empty.
the rest of the folders are functioning ok, and i copied them to another HD, so now the problem is fixing the part that contains the videos so i can copy it to another HD

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Fiona
Posts: 2836
Joined: 18 Feb 2012, 17:19
Location: Ludwigsburg/Stuttgart - Germany

Re: Partition recovery for an external HD

#2 Post by Fiona » 14 Oct 2013, 12:12

i removed the HD from the case and connected it directly to the pc using a sata-esata connection, and i tried many programs and followed many tutorials to fix it without any use, (the HD just shows as unallocated, then i changed it to RAW and tried other apps but also couldnt reach anything.)
Some WD My Book disks are hardware encrypted.
Info;
http://forum.cgsecurity.org/phpBB3/tryi ... -t200.html
If it's possible should put your disk back into its enclosure and have another try to make a diagnose using testdisk.
Maybe ithelps if you don't access your disk through the windows explorer.

Now, it looks like, that you were already modifying your partition?
Please don't change or write anything to your disk anymore.
It can increase damage.
Don't format it either.

Please, let me know, how did you change your disk from unallocated to a RAW-partition.
At least it displays a label Teknik.
Maybe a bootsector diagnose could help?

Would it be possible to copy and paste the content of your testdisk.log?

Have you had a GPT-disk or advanced formatted 4 K sector size disk before?

Fiona

Radam9
Posts: 2
Joined: 13 Oct 2013, 14:56

Re: Partition recovery for an external HD

#3 Post by Radam9 » 14 Oct 2013, 12:34

Dear Fiona,

I have probably messed things up quite a bit, while trying to fix it :S .
anyways, i changed it from unallocated to Raw through the Disk Management (it was New Simple Volume).

These are the contents of the testdisk log

Code: Select all

Mon Oct 14 13:19:54 2013
Command line: TestDisk

TestDisk 6.14-WIP, Data Recovery Utility, January 2012
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org
OS: Windows 7 (7601) SP1
Compiler: GCC 4.3, Cygwin 1007.7
Compilation date: 2012-01-06T08:56:06
ext2fs lib: 1.41.8, ntfs lib: 10:0:0, reiserfs lib: 0.3.1-rc8, ewf lib: 20100226
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(/dev/sda)=750156374016
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(/dev/sdb)=3000558944256
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive0)=750156374016
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\PhysicalDrive1)=3000558944256
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\C:)=716761464832
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\D:)=32212254720
filewin32_getfilesize(\\.\E:) GetFileSize err Incorrect function.

filewin32_setfilepointer(\\.\E:) SetFilePointer err Incorrect function.

Warning: can't get size for \\.\E:
filewin32_getfilesize(\\.\F:) GetFileSize err Incorrect function.

filewin32_setfilepointer(\\.\F:) SetFilePointer err Incorrect function.

Warning: can't get size for \\.\F:
disk_get_size_win32 IOCTL_DISK_GET_LENGTH_INFO(\\.\G:)=3000558944256
Hard disk list
Disk /dev/sda - 750 GB / 698 GiB - CHS 91201 255 63, sector size=512 - Hitachi HTS547575A9E384, S/N:J2590054GTBYLG, FW:JE4O
Disk /dev/sdb - 3000 GB / 2794 GiB - CHS 45599 255 63, sector size=4096 - WD My Book 1140, S/N:WMC1T0018806, FW:1019
Disk \\.\PhysicalDrive1 - 3000 GB / 2794 GiB - CHS 45599 255 63, sector size=4096 - WD My Book 1140, S/N:WMC1T0018806, FW:1019
Drive G: - 3000 GB / 2794 GiB - CHS 45599 255 63, sector size=4096 - WD My Book 1140, S/N:WMC1T0018806, FW:1019

Partition table type (auto): Intel
Disk /dev/sdb - 3000 GB / 2794 GiB - WD My Book 1140
Partition table type: Intel

Analyse Disk /dev/sdb - 3000 GB / 2794 GiB - CHS 45599 255 63
Geometry from i386 MBR: head=255 sector=63
BAD_RS LBA=256 4666
NTFS at 0/4/5
BAD_RS LBA=1584212648 11438282
check_part_i386 4 type 25: no test
Current partition structure:
 1 * HPFS - NTFS              0   4  5 45599 165  6  732558080 [Teknik]

Bad relative sector.
 4 P Sys=25               98612 172 33 236480 212 28 2214851936

Bad relative sector.
if i go to analyse again i get a different msg this time ....
Image


how do i do a bootsector diagnose ?
and i dont understand your last question,
Have you had a GPT-disk or advanced formatted 4 K sector size disk before?
i am not that good with the technical pc stuff :)

Edit:
Ok now when i use Testdisk, its very slow, when i start it it says please wait before showing the drives, and all the commands in the Testdisk take ages to complete, when i press show file list after a quick search it seems like the programs just freezes, and if i got for a deeper search nothing really happens it gets a screen without any % counter.
i hope i didnt completely destroy the HDD.
CMD chkdsk gives the following

Code: Select all

The type of the file system is NTFS.
The first NTFS boot sector is unreadable or corrupt.
Reading second NTFS boot sector instead.
Unable to determine volume version and state.  CHKDSK aborted.
HD Tune gives the following result
Image
PS: i used 2 applications those where yesterday and today morning.
-(Easeus Partition Manager : used it to Rebuild the MBR, and tried assigning a Disk letter for the HD)
-(Minitool partition wizard: tried a partition recovery)
Thanks
Adam

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