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Questions tagged [ddrescue]

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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ddrescue reset usb device on read timeout

I have a damaged external usb hdd. When i connect the device to the pc i can access the file system for round about a minute. After that period the disk keeps spinning but every io operation times out....
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2answers
90 views

Can I recover a single partition with ddrescue?

I have a failed hdd (seagate 1Tb) with bad sector. I want to make an image of it with ddrescue. The problem is that I don't have a 1tb hdd to put the image on. The files that I have to rescue are ...
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89 views

How to speed up ddrescue

I am trying to backup my failing external USB HDD Maxtor M3 4TB using ddrescue. In the beginning, I was getting around 300kB/s so I ripped the external box and connected the drive directly via SATA ...
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Why does VMware stop writing data read using ddrescue?

I'm using VMware Workstation 15 Pro to run a VM containing some pretty current rescue-Linux to rescue data from some broken USB-HDD using ddrescue. That starts working fine for some GBs of data, then ...
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How to recover data from unallocated drive? [duplicate]

The 750GB hard drive in my Windows 10 laptop has died and I'm planning out my recovery strategy with the Parted Magic CD. The drive is currently showing up as "unallocated" in GParted. Here are the ...
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77 views

How to merge ONLY mapfiles of `ddrescue`? (only mapfile was mistyped)

My system is Manjaro (Arch) Linux. I have GNU ddrescue v1.23-1 (recently installed). When resuming ddrescue, I mistyped the mapfile. Now I have one image and two logfiles. On Day 1, I rescued the ...
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40 views

ddrescue stuck, Error Splicing DVD file on Linux, but not on Windows

I have couple of old scratched DVDs which I wanted to rescue using ddrescue. The problem is it shows "error splicing file" on copying files manually using PartedMagic or Ubuntu, also ddrescue gets ...
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3answers
95 views

Is it safe to use multiple different `--input-position` with ddrescue?

I need to rescue data from some 2 TB large hard-drive and am doing so in some Live-Linux in some VM, where the problematic hard-drive is connected to using USB 3 and the VM provides a virtual disk of ...
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139 views

Can't resize NTFS partition

I'm cloning an old 1TB drive to a new 2TB drive. I've successfully managed to clone it, using ddrescue and SystemRescueCD, and can now boot into Windows on my new 2TB drive. However, the drive now has ...
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57 views

Using different versions of ddrescue “together”

I have a 2TB Seagate Barracuda 2.5 inch drive which is starting to fail (SMART is yellow and showing many pending sector reallocations, copying a 70GB disk image I had on it failed, bla bla). I ...
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194 views

GNU ddrescue, request help on how to proceed for advanced passes

Hello I'm doing an image of an ntfs disk with the GNU utility ddrescue, I made a first pass with the -n option which resulted in an amount of non-scrapped data, a bad-sector amount, a number of bad-...
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Hard disk periodically hangs with large amounts of I/O

To illustrate the problem: right now I'm backing up a NTFS partition with ddrescue. The application will run for several minutes (2-3 GB) and then apparently hang. No errors are reported and it never ...
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Trying to restore gnu-ddrescue .img file to new HDD

I tried to do a routine Win7 x64 SSD backup using Clonezilla. Tried a couple of times but it failed both times reporting bad sectors. I ran checkdisk and a few other programs but they found no ...
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466 views

ddrescue: Retry failed blocks after first run

I backed up a failing harddrive with ddrescue. The command I used was # ddrescue -vv -d -J /dev/sda /mnt/rescue/winxp.img winxp.map The program completed with around 60 errors. I wanted to retry ...
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Recovery of files from a Windows failing drive

A 1TB NTFS-formatted disk on my Windows 10 machine started crapping out. Following advice in other questions, I downloaded a System Rescue CD ISO, booted from it and ran ddrescue as suggested here to ...
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109 views

Gddrescue asks for a mapfile but refuses to create one

I'm using Example 3 from gddrescue's documentation here to zero-write a disk and force pending bad sectors on it to be reallocated. The same documentation states elsewhere that: If mapfile ...
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161 views

Can't mount a Windows 10 drive for ddrescue

I'm trying to run ddrescue for a drive containing a Windows 10 installation. I have shutdown the operating system with shutdown /t /s 0 to circumvent the hydrid shutdown issue. blkid shows the ...
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105 views

Can't write back a ddrescue(d) image to HD, ends up blank

I have an image file of a faulty harddrive created with ddrescue on Linux. The harddrive is 750GB, if I remember correctly, only about 30MB could not be saved. I do have some other faulty HDs and can'...
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1answer
160 views

gddrescue --fill-mode=+ with a map file of 0x00000000 0x608336000 + has left the partition table intact?

I first ran this command: ddrescue --force /dev/sda /dev/null HGST_RMA.map I just wanted a map file for blanking (therefore /dev/null). And this is what my .map file looks like before I interrupted ...
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45 views

Any way to undelete accidentally removed partitions? [closed]

At the moment I have Knoppix 8.1 inside a DVD and a 16GB USB stick if I must download another rescue OS, and 2TB external hard disk I bought yesterday I am aware of the size of the partition which is ...
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1answer
156 views

How to explore a ddrescue image manually / interactively?

I have a ddrescue image containing data from a Btrfs partition whose first GBs were overwritten. Therefore, the filesystem cannot be mounted, so the files cannot be accessed through any filesystem as ...
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254 views

Correct command on 'gddrescue'

I'm using gnu ddrescue by Antonio. I have a broken, but not dead (checked by the photorec utility - it found and saved many files on it) a 1 terabyte usb-HDD and the goal is to create its RAW-file. ...
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317 views

ddrescue, “size on disk” lower than total size, with possible impact on performance when writing to NTFS

The backstory is in my previous question and my own answer to it. At one moment I had two partial images created by ddrescue: one file on NTFS filesystem and the other on ext4. I had noticed quite ...
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1answer
365 views

DDRescue Log File Corrupt after 6 week recovery

I've been runnning DDRescue on a 3Tb drive for almost 2 months and I had recovered about 2.8Tb when the system crashed and the log file I was using came out corrupt. I was able to recover portion of ...
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1k views

ddrescue very slow, writing to NTFS – is it worth it to convert to Ext4 now?

Two days ago I began the recovery of a 1TB failing HDD which was handed out to me with the hope that I could salvage most of it for a cheap price. At first it behaved erratically, often being ...
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1answer
111 views

Safely recover disk when I don't have enough free space to make an image and copy files out

I have a 2.7T hard drive that has been causing some problems lately, so I've bought a new 3.6T disk. The old drive contains about 2.4T of data (lots of files are hardlinked) in a single ext4 file ...
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1answer
283 views

DDrescue parallel operation

I’m using ddrescue to recover data from a Seagate Barracuda 3TB drive. The drive is failing, but so far every sector I try to read eventually returns the correct data, but it might take some probing (...
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164 views

How do I use drive copy generated by ddrescue that shows no partitions, only unallocated space?

I recently used ddrescue in Ubuntu to attempt recovering data from a failing HDD (details here). The process completed successfully with the following: GNU ddrescue 1.19 Press Ctrl-C to interrupt ...
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1answer
726 views

Do I need to format/partition ddrescue destination drive?

I am trying to recover data from a failing hard drive using GNU ddrescue on Ubuntu. I used the following command: sudo ddrescue -f /dev/sda /dev/sdb [path to mapfile] So far it is working speedily ...
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143 views

How to find corrupted files on LUKS encrypted disks by searching for unencrypted content

I have a full disk encrypted Ubuntu 16.04 system running at home on a SSD which had uncorrectable media errors and so had to be replaced. So I used ddrescue to copy all partitions to a new SSD, and ...
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1answer
375 views

Merging 2 ddrescue output of the same drive efficiently

I am trying to rescue a partition in a failing 500GB hard drive at /dev/sdb using ddrescue to a second 1TB drive. The ddrescue command I use for first pass is: ddrescue -n /dev/sdb2 core.img core.log ...
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3answers
975 views

Hard drive docking station usable for hard drive recovery?

I installed Linux on an old computer along with ddrescue. Instead of placing each broken hard drive in the internal bay, can I use an external docking station with ddrescue? I'm hesitant to buy a ...
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1answer
317 views

How to rescue a multi-session CD?

I have a multi-session CD whose contents I want to copy to a hard drive. The CD is around 20 years old and it has several parts presenting read issues, so it is a potential candidate for ddrescue. ...
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546 views

How to recover ddrescue image from failing hard drive

I have a WD Elements with 2 partitions (HFS for Time Machine and NTFS for personal data), the hard drive stop being recognized, under Windows tell that I need to format the driver. I test with S.M.A.R....
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188 views

Cloning an macOS encrypted drive for data rescue using GNU ddrescue on Linux

I'm using macOS and I have an external hard drive that was force ejected during a copying operation, making it unmountable. There seems to be bad sectors on the drive (which probably was what ...
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1answer
2k views

TestDisk image vs ddrescue for recovering data from a defective hard drive

I am trying to duplicate a “defective” hard drive (making strange noises after it fell on the floor). After some research, I discovered TestDisk and the “Image Creation” tool to clone the disk. I ...
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1answer
97 views

How to switch ddrescue from `/dev/sdq1` to `/dev/sdq` if I've already backed up data from `/dev/sdq1`?

I started to recover my /dev/sdq1 when I was not familiar with HDD recovery. Well, I was careful enough and recover 85% in about 500 runs. Afterwards, I've found out that I need /dev/sdq (without 1) ...
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1answer
239 views

Cannot see files after ddrescue

I am trying to recover data for a friend. I have cloned their drive and ddrescue reported no errors. When I try to access the destination drive I can access it, it reports 200 GB free space of 2 TB ...
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1answer
750 views

Correct usage of ddrescue

I have a 80gb Maxtor IDE HDD that suddendly fail. I start using ddrescue from systemrescuecd. the cose i use is: ddrescue -d /dev/sdc image.dd logfile.log it's been 2 days that it's running. it ...
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1answer
1k views

Drive recovery – `ddrescue` hanging

I'm using ddrescue to recover files from a hard drive. Details: 500GB SATA drive, 2 Partitions (e.g. sdb2, sdb3) – each with about 200 GB of data, connected with SATA adapter to USB, running: sudo ...
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1answer
572 views

Why did ddrescue recover img file larger than the original hard drive used space?

So I'm about a week and a half into a ddrescue operation. The failing external hard drive is 2TB, with about 1.8TB of data, mostly photos. Here's what ddrescue is reporting at the moment, still in ...
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1answer
193 views

Recover files with ddrescue from NTFS to HFS+

I am trying to recover files from an NTFS volume onto my main HFS+ drive using ddrescue. diskutil list reports the following status: /dev/disk0 (internal, physical): #: TYPE ...
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1answer
772 views

NTFS images recovered by ddrescue - should I run fsck on them?

I have a hard drive that began to fail recently, throwing errors and failing to mount any of its partitions. I used the amazing ddrescue tool, running in Debian, to recover the main three partitions ...
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433 views

ddrescue using a much bigger intermediate drive. How to move back to a smaller drive?

I have a 750GB hdd that had a problem, so I rescued the data using ddrescue. I didn't think much of it and created the rescue using a much bigger (2TB) drive. sudo ddrescue -f /dev/sda /dev/sdc ...
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41 views

Rescue data on (dropped) external hard drive

Recently I dropped my 4TB hard drive. When I connect it to my Mac, the disk utility recognizes it but is unable to initialize it. I ran ddrescue on it. The log says that all data is "unreadable". ...
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1answer
621 views

GNU ddrescue - can someone give me a good command to run in terminal?

I have a damaged hard drive with many bad sectors from my parents windows computer, attached via Sata cable to a Virtual Ubuntu (on my Windows Desktop). i want to use ddrescue (GNU) to create a Disk ...
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1answer
400 views

ddrescue from drive intermittantly cutting out, ways to automate power cycling via software?

Have a failed Windows/NTFS drive. I was able to connect to another PC via USB-to-IDE cable and recover most of the drive with a Knoppix 7.2 LiveUSB and ddrescue/ddrutitliy. I've recovered most ...
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1answer
1k views

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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1answer
699 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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2answers
607 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, ...