ddrescue is a data recovery tool that copies data from one file or block device to another, trying to rescue the good parts first in case of read errors.

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Can ddrescue's sparse option facilitate cloning a drive to a smaller destination drive?

Can ddrescue be used to clone a drive from a larger disk to a smaller one via the --sparse option? This discussion outlines the steps of using ddrescue to clone drives and the importance of using the ...
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14 views

ddrescue from drive intermittantly cutting out - way to minimize initialization or other reads?

Have a Windows/NTFS drive that's on its way to the dustbin, able to intermittently read on another PC via USB-to-IDE cable, a Knoppix 7.2 LiveUSB, ddrescue and ddrutitliy to pull what I can onto ...
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63 views

Using ddrescue to recover a broken drive. Can I check the progress before the run is complete?

I am currently running ddrescue on a drive that failed on me. It's been running for maybe 16 hrs now and is still in the splitting failed blocks stage but has been running at 0 B/s for sometime now. I ...
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38 views

Can't mount an image created by ddrescue

I have a 500GB disk that I'm trying to recover using GNU ddrescue. This is the fdisk for the 500GB disk: Disk /dev/sdc: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders, ...
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24 views

Possible to recover using a partial ddrescue image?

I'm using GNU ddrescue to clone a failing 500GB disk and the image is currently sitting at 470GB. The problem is that read speed has decreased to only 8-32 KB/s so that remaining 30GB will take ...
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36 views

How to edit ddrescue log file to resume at a certain spot?

I'm trying to image a 500GB disk using GNU ddrescue and using the log file. I got to 420GB and then I stopped it with ctrl+c. I ran the command again after some time and it started all over again, ...
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25 views

Recovery from ddrescue image and preserve original folder structure?

I'm running Ubuntu and have access to Windows 10. I have an image of a disk that I created using GNU ddrescue. I tried using foremost on the image and foremost seems to create a separate folder named ...
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14 views

How to update ddrescue Macport version?

I'm running ddrescue version 1.20, but the latest version is 1.21. I used MacPorts to install ddrescue, and according to their ports page only 1.20 is available to download and install through the ...
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20 views

Extracting ddrescue image file pass 1

I am trying to recover data from a failing usb hard disk using ddrescue. I ran ddrescue for about 4 days at the end of which it completed pass 1. Sometime after it began with pass 2, I interrupted the ...
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50 views

Will ddrescue make recovering an overwritten partition easier?

I have an external HDD that's been erroneously formatted. I've never used ddrescue before, and have read much about it. The one thing I'm a little confused about is: Will creating an image of the HDD ...
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84 views

ddrescue stuck on scraping bad blocks… (forwards)

I have a Hitachi 640GB laptop hard drive that has some bad blocks. I don't believe the blocks are physical bad blocks, because the drive doesn't make any clicking noises. The hard drive is formatted ...
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ddrescue won't resume even with log file

I did a partial gddrescue run with the log file. It's from one external USB disk to another. sudo ddrescue /dev/sda /media/myname/volume5/backup.dmg /media/myname/volume5/logfile.log I stopped ...
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20 views

Which image file to pick for ddrescue?

The instructions for ddrescue / gddrescue are awful. The main instructions just say without mentioning any file types ddrescue /input /output logfile Others tell me to do ddrescue /input /...
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93 views

What causes this HDD sector damage pattern?

Out of curiosity, I ran GNU ddrescue on a Seagate ST1000LM024 HN-M101MBB hard drive with known bad sectors, and then I visualized the ddrescue mapfile with ddrescueview. When I zoomed in, this ...
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How to safely merge two ddrescue images

I have a damaged hard disk hdbad that I have run ddrescue on twice and saved to two different hard disk images hdimg1 and hdimg2 with: $ sudo ddrescue -d -f -r3 hdbad hdimg1 mapfile1 $ sudo ddrescue ...
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78 views

In which case should I prefer dd over GNU ddrescue?

As far as I can see, comparing dd with ddrescue can be concluded saying that ddrescue is far better at rescuing data from broken data sources. dd does not have this ability. dd_rescue vs dcfldd vs dd ...
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42 views

DDRescue running very slow

I am recovering 2TB hard disk, It seems too slow that in 20 hours it rescued 4000MB only is there any way to increase the speed ? My command to run the ddrescue was sudo ddrescue -d -f -r3 /dev/sdc /...
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23 views

dd utility number of passes on bad block

In ddrescue you can set how many times to try to read from bad block (ddrescue -r1 will try once). It does not seem to be the case with dd. Does anybody know how many times dd tries bad blocks? ...
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63 views

Is it possible to edit partition on disk image?

I am attempting to recover a crashed 2TB drive using ddrescue. It's been running for over a week now, and just got near the end and apparently ran out of space with this error: ddrescue: write error: ...
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188 views

Which will be the size of a ddrescue image?

I'm trying to fully understand ddrescue before using it to decide which is the best strategy to recover the most from a maybe damaged HDD. Chances are the hardware is not damaged but before trying any ...
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53 views

Can I mount read-only a partition image that is being written into by ddrescue?

I'm recovering a damaged drive. The first 2 passes are done, but I want to rescue more data, while being able to browse the already closed partition image, while it is being filled up with new data ...
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85 views

How the retrim option works in ddrescue?

I would like to have some details about how the --retrim option works in gnu ddrescue. Does it behave the same way as the regular trimming? AFAIK, in the first trimming phase, the utility goes to the ...
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135 views

ddrescue fails to complete NTFS recovery

I recently had a friend with a new Hitachi 2TB 32MB 7200RPM 3.5" SATA 6.0Gb/s Internal Desktop Hard Drive with Win7 Pro OS that was reported by Windows as failing. He asked me to recover it and ...
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83 views

Figuring out what sectors ddrescue recovered

My hard drive (which I bought back in 2008) has unfortunately died. Or, well something's wrong with it and I'm not sure what. GRUB can't find the partition(s) on it (and just stops with an error and ...
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75 views

ddrescue: safely switch between normal/reverse with a logfile?

I'm trying to rescue a broken harddrive with: sudo ddrescue -d -r3 /dev/sda harddisk.img harddisk.logfile (yes, it's indeed sda because my sATA cables are weird) Now I've read that ddrescue has a ...
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48 views

Intentionally reduce speed of ddrescue

(first time poster) I want to slow down how fast ddrescue copies data. I'm imaging a hard drive from my linux laptop to my windows desktop. ddrescue is able to run faster than my computer can download ...
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95 views

DDRescue locks system up on disk clone

I have ddrescue running on the latest version of Fedora trying to clone a dying IDE disk. When I run ddrescue --no-split /dev/sdb imagefile logfile the copy will happen then the entire system will ...
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82 views

Recover specific files from a damaged hard drive

I'm trying to recover some 3-5GB of NEF files which were not yet backed up at the time of the crash. This is a 418GB ext4 partition and when mounted with -o ro,noload I can list the directory where ...
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103 views

ddrescue goes very slow on encountering errors

I am using the ddrescue for the very first time.May be an expert with this can help me a little. I have a 320 gb sata harddisk with 334 bad sectors(including 114 on the surface itself) & many ...
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315 views

Can not mount copy of image file (ddrescue): “can't have a partition outside the disk”

I'm struggling for days now moving my old Windows XP installation to a new hard disk, because the old disk is failing. Long story short: I successfully created an image of the entire (failing) disk ...
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280 views

Device Is Busy When Trying To UMount

I am using the Ubuntu Rescue Remix and Ddrescue. I am in the process of creating a RAW image onto a 'good' drive (sdc) from a 'bad' drive (sdc). I used the command sudo ddrescue -r 3 /dev/sdb ...
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Combining two disjoint ddrescue backup images

I have a 3 TB drive which recently started to malfunction. I was using the ddrescue utility on Debian to read data off the disk to a different external hard drive. However, after 2 TB of data had been ...
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298 views

What do I do after directly copying an NTFS volume from one device to another with ddrescue?

I used ddrescue in a Ubuntu Live boot to rescue data from a failing 3TB external HDD formatted as NTFS. I had it copy the data directly to a new physical device, i.e. I didn't create an intermediate ...
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53 views

Mount ddrescue imaged password protected drive

I'm trying to recover a crashed HD from a Macbook. I've imaged the HD successfully onto my external HD but when I try to mount it I get a mount_hfs: Invalid argument error. I'm assuming this is ...
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299 views

DDRescue - Did I do the wrong command which is causing it to take longer then expected

I am running the following command on a 500GB drive: ddrescue --force --direct /dev/sde2 /home/backups/sde2.img sde2_logfile.ddrescue However, the time has been almost 24hrs and all it has done so ...
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913 views

ddrescue attempt ends with drive disappearing from dev

I have been trying to recover data from a Seagate 7200.11 1.5TB drive (2 ext4 partitions_ for 3 days now, predominantly with ddrescue and testdisk, but because of some critical error on the disk (...
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GNU ddrescue “Rescued” is larger than the HDD

I am using ddrescue to recover data from a failing drive. The drive is being read as 596.2 GB via the lsblk command. The thing that is confusing me is that ddrescue is showing that it has, so far, ...
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1k views

Recovering data from failing hard-drive using ddrescue

Lately my hard-drive have failed me. I'm trying to rescue some important data from it and right now im stuck doing this... I've read about ddrescue data recovery tool and it seems like it's doing its ...
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118 views

Correct command for ddrescue

Hi guys this is my situation: Knoppix ATA WDC WD64 WDC WD6400BPVT-22HXT1 FIRMWARE VERSION :01.01A10 640 GB device /dev/sdc This disk has a few bad sectors, master boot record. This is from disk ...
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37 views

Restoring backup with dd

I have made a backup of an hard drive using ddrescue. Now I have the .img file. How can I restore the .img Backup to an other hard drive? I have tried dd if=backup.img of=/dev/sdc but the hdd sdc is ...
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81 views

ddrescue - what are bad sectors look like in the final?

I've read tons of docs on ddrescue, but still can't get sure on such a thung: how the bad sectors look in the output image file(or disk) at the end of the ddrescue's work? Manual says it skips bad ...
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867 views

Trying to mount ddrescue image from a 1tb crashed ntfs drive

I asked this on Ask Ubuntu without success and they recommend to repost it on superuser, so here i am! It was time, after 5 years my 1tb external drive with all of my family photos and all my music ...
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261 views

Windows ntfs partition hard disk fail recovery attempts [closed]

This is part question and part response. I'm not a Linux guy but I've used from it time to time. Here is my case: An HDD with Windows NTFS partition has failed, no recovery software on windows has ...
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343 views

Why can't ddrescue just recover blocks used by the filesystem?

It seems that ddrescue tries to recover all blocks on a disk or partition, even ones that don't contain files. Wouldn't it be possible for it to find out which blocks actually hold files by looking at ...
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255 views

Cannot mount image made with ddrecovery in Fedora

I have recently made a switch to Fedora. I have an NTFS disk image that I made from a failing hard disk on Ubuntu using ddrecover. Under Ubuntu, I could mount the image just fine and recover the ...
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253 views

circumvent directory I/O error

I recently recovered a large amount of data from a failed external hard-drive with ddrescue, which did an excellent job. However, after running the tool several times and with different options, it ...
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191 views

Will dd_rescue wipe my output hard drive?

I'm planning to use dd_rescue (as per IT support's instructions) to try and get the data contents of a faulty hard drive. We only have one external hard drive to back up onto which has enough free ...
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3k views

Why is it impossible to compress on the fly images by ddrescue?

I'm trying to recover files on a dying hard drive, using GNU's ddrescue. The drive is rather large (1TB), and all I have to store the image is another 1TB drive. ddrescue fails near the end, with an ...
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671 views

ddrescue has slowed down massively on os x

I'm using ddrescue to image a drive, and it's slowed down to about .1 % as fast as it started, at this rate I'm not sure if it will even finish, at any rate, I'm not sure I can tie up this machine ...
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1k views

Reading bad blocks from hard disk too slow in Linux

I'm trying to recover data from an old 320G hard drive (full of bad sectors) to a new one. I found that ddrescue is a good tool for this task due to it's smart algorithm. I have already done this once ...