Lost partition/data - reed error message

How to use TestDisk to recover lost partition
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artur
Posts: 1
Joined: 05 Jun 2012, 10:12

Lost partition/data - reed error message

#1 Postby artur » 05 Jun 2012, 10:27

Dear all,

I hope I am not describing situation that is already available on forum.

During copying a data the external disk lost connection and from that time is not accessible under windows (communicate - disk is not formatted do you want to format it now?).

I have run analysis - under windows it was extremely slow ( 1%/1 hour).

Under linux was much better but:
when I run analysis first communicate is ----> Partition: Read error
quick search ---> Structure: Ok.
enter --------------> No partition found or selected for recovery
Deeper search ---->Structure: Ok.
enter --------------> No partition found or selected for recovery

log file is 1.4 GB large and contains line like:
file_pread(7,8,buffer,241537480(15035/3/17)) read err: Input/output error

What should I do to restore my data?

Is any hope?

with best regards

Artur

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remy
Posts: 457
Joined: 25 Mar 2012, 10:21
Location: Strasbourg, France.
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Re: Lost partition/data - reed error message

#2 Postby remy » 07 Jun 2012, 14:21

Unfortunately it looks like your problem is hardware related. Under linux, did you try to check SMART ? Is your disk well recognised ? Are you able to uplicate it to another disqk using bit to bit tools like ddrescue ?
J'ai pour habitude d'aller au bout de l'aide que j'apporte. Si vous pensez que je vous ai abandonné, et que je ne l'ai pas fait explicitement, c'est que votre message est enfoui avec d'autres. Relancez-moi (modérément) par mail.

joseba
Posts: 3
Joined: 30 Dec 2014, 17:16

Re: Lost partition/data - reed error message

#3 Postby joseba » 30 Dec 2014, 17:29

Good afternoon,

Recently I had the same problem with my backup external HD of 500 GB. I've trying TestDisk a lot but I arrived nowhere ... My Windows 7 PC has taken 5 or 6 days to analyse the HD and I have a 5GB testdisklog file.
In the screen after analysis I find this:

Disk /dev/sdb - 500 GB /465 GiB - CHS 60801 255 63

No partition available


What can I do ?, is there any solution?

Many many thanks for your soft, for your web and for your effort. Happy 2015 !!

joseba
Posts: 3
Joined: 30 Dec 2014, 17:16

Re: Lost partition/data - reed error message

#4 Postby joseba » 31 Dec 2014, 11:47

More information about the problem I have.

After trying to Rebuild a BS I reached the screen I'm annexing.

I have to detail that when I started to have the problem, the PC was able to detect the disk (unit D:/), and I was able to reach most of the content of the disk, not all. But the PC did it very slowly, it was taking a lot of time to show the content of the unit. As I was not able to reach everything, AND I HAVE A SECOND BACKUP DISK (so my problem is not to recover the data inside, but to recover the HD itself to continue using it), I followed the windows suggest to format the HD. I never been able to format it from Windows, it seemed to be blocked in the format screen. I tried many times in different PCs (in a Windows XP and in a Windows 7), but I arrived nowhere.

Now the situation seems worse, as the PC continues to detect the unit once I connect it via USB, but it is unable to show the content and directly suggests to format it. And with TestDisk I obtain what I've explained.

Many thanks again for your work. Have a very good 2015 !!
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joseba
Posts: 3
Joined: 30 Dec 2014, 17:16

Re: Lost partition/data - reed error message

#5 Postby joseba » 31 Dec 2014, 11:53

One more question:

as I have a second backup HD, IDENTICAL TO THE ONE I'M INTO TROUBLE (both are Iomega 500GB, same model), can I copy any file system or so from the good disk to the bad disk in order to rebuild the bad one ?.


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