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 Post subject: Re: Samsung HD502HJ Recovery
PostPosted: July 3rd, 2018, 16:58 
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Joined: January 29th, 2012, 1:43
Posts: 450
Location: United States
So what is the approximate total size of the files you would like to recover? A few hundred MB, a few GB, many GB? The smaller the better, like if you are trying to get family photos that are not backed up. There is someone that wrote how to target files using ddrutility, but it is somewhat complicated. They did a very nice job of explaining how to do it though. It can be found at this link in the discussion area, look for the thread "Create a domain for specific files":
https://sourceforge.net/p/ddrutility/discussion/
But this is only helpful if the data is not large. If you had the drive mostly full and need most of that data, then targeting really doesn't help much at all.

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 Post subject: Re: Samsung HD502HJ Recovery
PostPosted: July 4th, 2018, 1:41 
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Joined: July 2nd, 2018, 7:19
Posts: 6
Location: Ohio the state
maximus wrote:
So what is the approximate total size of the files you would like to recover? A few hundred MB, a few GB, many GB? The smaller the better, like if you are trying to get family photos that are not backed up. There is someone that wrote how to target files using ddrutility, but it is somewhat complicated. They did a very nice job of explaining how to do it though. It can be found at this link in the discussion area, look for the thread "Create a domain for specific files":
https://sourceforge.net/p/ddrutility/discussion/
But this is only helpful if the data is not large. If you had the drive mostly full and need most of that data, then targeting really doesn't help much at all.


They tend to be in the tens of Megabytes or smaller, however I am already running into problems

Code:
thebladeroden@JoshLinux ~/Documents/ddrutility/ddrutility-2.8 $ sudo ddru_ntfsbitmap -m domainMFT /dev/sda1 domain --debug
ddru_ntfsbitmap 1.5 20150111

Reading boot sector...
GNU ddrescue 1.23
Press Ctrl-C to interrupt
     ipos:        0 B, non-trimmed:        0 B,  current rate:       0 B/s
     opos:        0 B, non-scraped:        0 B,  average rate:       0 B/s
non-tried:        0 B,  bad-sector:      512 B,    error rate:     256 B/s
  rescued:        0 B,   bad areas:        1,        run time:          2s
pct rescued:    0.00%, read errors:        1,  remaining time:         n/a
                              time since last successful read:         n/a
Finished                                     
ddrescuelog: Mapfile '__bootsec.log' not done.

There was an error reading the boot sector, aborting.


attached is the logfile from my SATA to SATA attempt


Attachments:
test5.logfile.zip [36.83 KiB]
Downloaded 17 times
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 Post subject: Re: Samsung HD502HJ Recovery
PostPosted: July 4th, 2018, 9:05 
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Joined: January 29th, 2012, 1:43
Posts: 450
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It looks like the partition boot sector is not readable, so none of the ddrutility stuff will work. It relies on that to know where to find the beginning of the MFT.

After looking at that last log, I think my initial report of the head degrading and being almost dead is correct. It looks like it is reading very little data. I think you are at the end of being able to do it yourself.

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 Post subject: Re: Samsung HD502HJ Recovery
PostPosted: July 5th, 2018, 1:19 
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Joined: July 2nd, 2018, 7:19
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Location: Ohio the state
What could cause a lot of files to have the correct filename, folder, and even size, but instead of any actual data, the file is completely filled with zeros, and can anything be done about them at this point?


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 Post subject: Re: Samsung HD502HJ Recovery
PostPosted: July 5th, 2018, 11:54 
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Joined: October 16th, 2013, 13:21
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Location: Brazil
The file data is in the not readed part of the disk, so it is just showing the data that was already in the destination disk.


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 Post subject: Re: Samsung HD502HJ Recovery
PostPosted: July 5th, 2018, 12:49 
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Joined: January 29th, 2012, 1:43
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As rogfanther just pointed out, the data part of the files must be in an area that was not read, meaning the data is located in the bad head.

If you are correct about the total size of the desired data being only tens of megabytes, or even a few hundred megabytes, a good data recovery pro may have been able to get the data without a head swap, although there is no certainty in that. But that would have only been possible at the very beginning. Now it looks like the head is almost dead and reading very little data. You have thrashed on the drive by repeated ddrescue and hddsuperclone attempts, and the head has degraded. Now the only way to get that data is almost certainly a head swap, which is something that you cannot successfully do yourself. An intelligent recovery approach at the beginning would have likely worked much better.

So what I am trying to say is, if your data is important and worth paying for, then you need to seek professional data recovery now. You will almost certainly pay a fair amount considering the head swap. If you can’t afford it now, but the data is important enough, then put the drive in a safe place and save up the money.

If the data is not worth paying for, then you are out of luck. If you decide to try to watch some youtube videos on how to do a head swap yourself, you will probably lose the data for good, also having wasted money on a donor drive.

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 Post subject: Re: Samsung HD502HJ Recovery
PostPosted: July 6th, 2018, 3:09 
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Joined: November 29th, 2006, 10:08
Posts: 7172
Location: UK
maximus wrote:
As rogfanther just pointed out, the data part of the files must be in an area that was not read, meaning the data is located in the bad head.

If you are correct about the total size of the desired data being only tens of megabytes, or even a few hundred megabytes, a good data recovery pro may have been able to get the data without a head swap, although there is no certainty in that. But that would have only been possible at the very beginning. Now it looks like the head is almost dead and reading very little data. You have thrashed on the drive by repeated ddrescue and hddsuperclone attempts, and the head has degraded. Now the only way to get that data is almost certainly a head swap, which is something that you cannot successfully do yourself. An intelligent recovery approach at the beginning would have likely worked much better.

So what I am trying to say is, if your data is important and worth paying for, then you need to seek professional data recovery now. You will almost certainly pay a fair amount considering the head swap. If you can’t afford it now, but the data is important enough, then put the drive in a safe place and save up the money.

If the data is not worth paying for, then you are out of luck. If you decide to try to watch some youtube videos on how to do a head swap yourself, you will probably lose the data for good, also having wasted money on a donor drive.


+1

Couldn't have put it better myself!

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