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Failing 3TB hard drive, cannot recover data

Hi everyone,
I'm having an issue with a WD My Book 3.0.
I was using it to back up data from another failing 1TB internal hard drive (I got 2 HD failures in less than 12 hours, lucky day I guess) with Cobian Backup 11. I left it to back up overnight and in the morning I found it didn't finish because it was copying very slowly. I tried closing Cobian and restarting Windows, but it just froze and I had to brutally reboot.
Turns out my drive had bad sectors. Yay.

Now, I managed to flawlessly recover the data from the 1TB drive using SystemRescueCD and ddrescue, it was quite fast and I was really impressed, so I tried it with the 3TB drive.
And it was SO slow. Speed ranged from 32kb/s to a whopping 256kb/s. With an average speed of 180 kb/s, it would take ddrescue AGES to recover the whole thing. Nonetheless, there were NO sign of errors in the hour or so that I let ddrescue run.
I ran ddrescue with the -n option to skip bad sectors during the first pass; this and the 0 errors count made me think there was something more to it.

So I tried googling some more, and I found some very interesting posts in this forum, written by fzabkar, about using DMDE. I thought I'd give it a shot, and I was surprised I was actually able to see my directories and files again.

Unfortunately, the drive is still very slow, and doesn't allow me to recover anything because a read error keeps popping. Now, I THINK (never used DMDE so I'm probably wrong) that the boot sector/MFT is on a badly damaged sector, and it cannot recover anything because of that.

I was able to locate the backup boot sector at the end of the drive, but I don't really know what to do with it.

So I thought it was time to ask the experts: how can I recover the data from this drive? Is DMDE the right way? I didn't try any "hard drive magic fixer" tool because I don't want to make it worse...
6 answers Last reply Best Answer
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  1. Best answer
    The latest trial version of WDMarvel may have a one-click solution for the 'slow issue', assuming that is the problem that you are observing.

    http://wdmarvel.com/ru/

    Otherwise, see http://www.alexsoft.org/viewtopic.php?t=998

    ... and http://forum.hddguru.com/viewtopic.php?f=1&t=29187
  2. fzabkar said:
    The latest trial version of WDMarvel may have a one-click solution for the 'slow issue', assuming that is the problem that you are observing.

    http://wdmarvel.com/ru/

    Otherwise, see http://www.alexsoft.org/viewtopic.php?t=998

    ... and http://forum.hddguru.com/viewtopic.php?f=1&t=29187


    Thank you for your answer, I tried using WD Marvel and after a few tries I got it running.
    Unfortunately, I cannot use the "Deal with slow responding" command, since the OK button is grayed out. Is this a demo limitation? Or has it something to do with the hard drive state?
    Here are some screenshots:





    I've read the other links... I wanted to try and clear the drive's RELO-list, but the link inside those discussions don't seem to be working for me (http://malthus.zapto.org/viewtopic.php?f=86&t=848). I tried using google cache but unfortunately it doesn't show me the images. How should I proceed from here?
  3. Thank you fzabkar, thanks to your MHDD script in the link you gave me I was able to clear MOD32 and solve the "slow" issue! Now I'm using ddrescue to clone the drive, it started really fast then it slowed down because of errors. But it still much faster than before.
    Thank you so much! You are amazing.
  4. AIUI, the "slow issue" is addressed by the change to MOD 02. Clearing MOD 32 is sometimes necessary when it is corrupt or nearing full.

    Congratulations.
  5. It appears that WDMarvel's demo version does not "deal with slow responding". Sorry about that. Nevertheless, the paid version costs $100 while a one-month licence costs $9.
  6. fzabkar said:
    AIUI, the "slow issue" is addressed by the change to MOD 02. Clearing MOD 32 is sometimes necessary when it is corrupt or nearing full.


    Oh, I see... well, kind of XD
    I'm not an average PC user, I am used to coding and I like to get my hands dirty... but this is on a whole new level, and I've learned a lot in 3 days. Hopefully I'll never need to apply this knowledge ever again ;)

    fzabkar said:
    It appears that WDMarvel's demo version does not "deal with slow responding". Sorry about that. Nevertheless, the paid version costs $100 while a one-month licence costs $9.


    Yeah I asked you because I wasn't sure if it was my disk or the trial, I would have totally paid for a one month license if the MHDD script didn't work. It's a great price for such an useful tool.
    Oh well I'm glad your script worked perfectly, being able to do it manually was actually a small satisfaction for me :)

    Thanks again.
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