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Questions tagged [ddrescue]

GNU ddrescue is a data recovery tool for block oriented media.

GNU ddrescue is a data recovery tool for block oriented media. If necessary it tries to read the input (file, harddisk, cdrom , ...) several times in several passes to gather more and more data.

129 questions
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How to estimate loops/time for completion of GNU ddrescue (1.18.1) using current status?

Background/Context: I am currently running GNU ddrescue 1.18.1 to recover data from a USB that experienced a cable disconnect while I was writing a virtual disk image onto the disk2s1 partition. Initially I am recovering my second partition…
Tommie C.
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1 answer

How to change current copy position or skip over area in ddrescue

I'am currently trying to recover data from a failing 3TB WD Red drive using ddrescue. After two weeks I got about one TB, but then read speed doped to a few thousand bytes per second and it would now take years to finish. I noticed that powering off…
NKnusperer
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3
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1 answer

DDrescue sequence of operations?

So I'm running DDrescue on a 1.5tb drive. I left 'r' at 2, to attempt to cut down on time needed to complete the task. At 2 1/2 days, it's still going, and now it's making the first pass on retrying bad sectors. Is the sequence of operations for…
Hugh Walxet
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ddrescue prohibitively slow because of I/O timeouts?

On Ubuntu, my disk gave its SMART notification so I immediately tried to copy files to another disk. That failed. So now I'm trying ddrescue (partition to partition). It is running ridiculously slow. I mean it would be several weeks to copy this…
Joe C
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3 answers

Why does ddrescue not use distinct mapfiles for read and write errors? (And how to detect write errors?)

Sometimes, I have to clone a hard drive to another one that seems healthy (SMART values OK), but whose surface could not be checked fully for possible bad sectors. Typically, if I clone a healthy hard drive, I might use a destination drive that was…
OuzoPower
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2
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1 answer

Usage ddrescue with -d option?

I am learning to use ddrescue and I would like to know what the -d (direct) option is for and in what scenarios it is recommended to use.
MarianoM
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2
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1 answer

ddrescue image can't be mounted

I am trying to recover the data from an external HDD for a friend. I am using Knoppix latest version booting it from USB. I created an image (.img) using a tutorial for ddrescue, but now I have the copia.img file and can't mount it. If I try to…
jfim88
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2
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1 answer

ddrescue resuming rescue operation to a different image file

I have a 3TB WD Green HDD that failed. I bought two WD Red 3TB HDD + Synology DS215j NAS. Before installing NAS in RAID1, I want to use the WD Reds to recover the data from the 3TB WD Green HDD (one WD Red for the image file, then the other WD Red…
Davide Norbiato
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1 answer

ddrescue status is there any hope?

I have an external hard drive of 1Tb which stopped working. I'm trying to recover the information using ddrescue but I don't see anything been recovered. I'm doing the copy from the external harddrive to another one, but it has been more than a…
kiduxa
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Ddrescue: can the data differ if I have erroneously mounted the drive on windows?

I'm trying to rescue an USB ext HD 2TB using ddrescue on a linux VM, host is win. Everything worked fine, rescued almost all, there are 60MB of errors left to work out. So I had some problems on the host machine, had to turn it off. Turned off the…
Enrico Graziani
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Resuming ddrescue always restarts at first retry?

I'm using ddrescue to make an image of a faulty harddrive. I followed a tutorial that used the -r3 and logfile option. After a few hours, the tool made one pass and tried to read the bad sectors on the second. I had to Ctrl+C because I went sleeping…
Stacka-Bo
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1 answer

ddrescue to the same disk

ddrescue will complain if the source device is the same as the destination device: ddrescue: Infile and outfile are the same. Even -f cannot convince ddrescue to do what I mean. How can I trick ddrescue to write to the same device?
Ole Tange
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1 answer

ddrescue, range in multiples of bytes

When using ddrescue, is it possible to only specify the first 25Gio? I see that I can use the -i parameter with block sizes, but can this be specified with Gio directly?;)
Jason Hunter
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ddrescue cloning disk to disk. I cannot see anything in the new disk why?

I have a failing disk 1TB which does a bit of noise so I decide to use ddrescue to clone disk to disk the failing disk into a new WD 1TB. I was expecting to see information in the new disk while cloning but i cannot see anything at all in it. It…
toni
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