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Posted 05 May 2014 - 03:04 PM
Posted 05 May 2014 - 03:21 PM
Copy off data you can read before you start trying to get data that you are having issues reading. Once you start getting the drive failure warnings you may have one more boot or the drive may last for years.
Are you moving the data off of the disk?
Posted 06 May 2014 - 07:24 AM
Posted 13 June 2014 - 09:27 AM
Let me say that you have done everything correctly, also DDrescue is one of the best utilities to recover data. That being said, any error rate can cause corruption. You can set ddrescue to run several passes both forward and in reverse I suggest doing this.
Some things I do to increase data recovery, put a heat sync on the hard drive (on the metal top, leave it outside of the computer) with a fan to keep it cool, I had a drive that copied 345GB this way non stop but would otherwise fail at around 10GB, it was getting too hot, the heat sync fixed that issue.
As a last resort after getting as much as you can, you can freeze the drive, put it inside of a ziplock bag, put it in the freezer for a good 5 hours. Take it out hook it up and run recovery again on the important files first, I suggest after freezing to try and recover data from linux first direct copy, not ddrescue. One particular hard drive recovery I did in the past I could get about 10 minutes of direct copy after freezing the drive then it would disappear from the computer. I had to re-freeze the drive again to use it. It took me 3 days to recover all of the important files but I did get them. Freezing rarely helps much but it is always worth a shot. Just be warned that condensation could cause the drive to fail completely so this is an absolute last resort.
If data is needed and can not be risked you are better off sending it in to Drive Savers or Ontrack Data Recovery before freezing the drive. It isn't cheap ~$1000 but they can take the drive apart in a clean room to recover data.
I have never had any better luck with other recovery tools... DDrescue is the best I have found yet so I can not advise you on anything better. Maybe others have had different experiences.
Edited by zingo156, 13 June 2014 - 09:32 AM.
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