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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Is it safe to re-run `ddrescue` if previous run was device-to-device using `-f`?

I initiated the following: ddrescue -f -r3 /dev/sdb /dev/sdc mapfile After 4 days I got a "Finished". The mapfile contains: # Mapfile. Created by GNU ddrescue version 1.26 # Command line: ...
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ddrescue slow when it copy the error blocks [duplicate]

I use the ddrescue to recover the data from the old hard disk, but I found it running very slow when it copy the failed blocks , can advise any options that can use on ddrescue to skip the error ...
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Can a broken cdrom drive cause I/O errors in programs like dd, ddrescue, etc.?

Can a broken cdrom drive cause I/O errors in programs like dd, ddrescue, etc. even if the disc itself doesn't contain bad sectors? Note that I'm interested in purely technical, factual answers, not ...
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I/O errors not bubbling up to ddrescue

I'm trying to get an image from a damaged USB stick using ddrescue. The process works for the first 100MB of the drive then gets completely stuck: the ddrescue output is frozen (not moving even for ...
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ddrescue --generate-mode produced mapfile for resume, but missing non-trimmed blocks?

I started ddrescue to recover a failing 2TB WD drive from my NAS. Although I specified a logfile, unfortunately I was running ubuntu in trial mode from a bootable flash drive and did not write the ...
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Recovering data from harddrive with defective MBR

a friend of mine currently has a problem with his external Harddrive. Unfortunately it's the only drive he's got a lot of old family photos on, so it's quite important for him. Behavior and my steps ...
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ddrescue : after having rescued a single partition, can I rescue the whole drive?

It might be a silly question but I had a dying external HDD with one single NTFS partition. I may have been naive, but I thought it would be better to use ddrescue to rescue the partition and not the ...
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Continue ddrescue from a corrupted log file

I ran ddrescue a few days ago in my 180GB partition, but after 3 days (and 99.91 % rescue and in phase 3 the last time I check) the system frozen, so I power off the computer by keeping pressed the ...
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ddrescue - Hangs while cloning

I am attempting to recover data from a failing WD Blue 1TB drive but am running into some issues. I started a clone onto another drive of the same size, and ddrescue ran without issues for 5 Hr 43 ...
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What do you do after ddrescue finishes?

It may seem like a simple question but even the manual doesn't seem to address it. The rescue completes with 24 bad areas. I access the target drive but it says "Folder is Empty". Presumably ...
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Can I resume ddrescue operation on a different drive?

I'm running ddrescue on an Ubuntu 20.04 box on a 500GB brand new SSD. I'm doing a full clone of the source disc, all partitions. The remaining time on the ddrescue readout has varied from 7 days down ...
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Using DDrescue to Backup Local Disk on Corrupted vBox VDI

After some crafty, -guessing-, I finally got this command to create a local .img of a remote disk (vbox) that is failing. It work, -slowly-, but it works: ssh root@example ddrescue -d /dev/sda1 - | ...
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Copying raw partition sequentially, in chunks, with error recovery

Normally if I want to copy a raw partition /dev/sdaX (with i/o errors when reading), I would just go with ddrescue <src> <dst>. The case here is that I'd like to be able to copy this ...
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What type of hard drive hardware failure leads to this stripy read failure pattern?

I'm in the process of recovering data using ddrescue from a failing ~1TB external hard drive. Much of the data is recoverable, which is great, but the symptoms are interesting, and I'm just wondering ...
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How to rescue a failed NTFS HDD?

I'm attempting to rescue a failed NTFS HDD via ntfsclone: I began to copy sector by sector via: ntfsclone --rescue --force --overwrite '/dev/sda1' '/dev/sdb1' It runs quickly up to 30% then tries to ...
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Find corrupted files on a partially recovered ext4

I have hard disk that was damaged by impact when it was running. The disk had 6 partitions and some unallocated space too. After the impact, 3 partitions appear to be fine and I am able to read/write ...
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I cloned a HDD with ddrescue. What next?

The original drive would not pass chkdsk or a clone using Macrium Reflect or EaseUS. I read up about ddrescue and decided to give it a shot. This is after all just a hard drive I used for installing ...
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How to recover an ext4 partition with a bad superblock on a dubious 500GB internal hard drive?

I bought this hard drive 6 months ago and it shouldn't be failing like this. It's a 500 GB sata III internal seagate that I have being using on an old ECS G31T-M9 computer with archlinux installed. I ...
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Hard drive stops working during ddrescue and is making odd sounds

We have an older HDD (WD Black 500 GB) that was still in use for the data it had but then at some point, Windows wouldn't boot with the drive installed. I checked with a Linux installation and the ...
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How to mount NTFS partition image in Windows created with dd on Linux?

As per the title, I need to work with an image created from Linux via ddrescue /dev/sda3 image.img in Windows. Notice that this is an image of a partition, not the entire drive. How can this be ...
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ddrescue encounters read errors only, no good reads at all

I tried to rescue a disk connected via USB to a Linux box using GNU ddrescue, but after running over the first 2 GB it couldn't rescue anything but instead reported only read errors. To avoid further ...
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GNU DDRescue 1.25 to copy a failed to be recognized 4.0TB HDD to rescue. Completed "mapfile", but what do I do with this mapfile file?

I have : Gigabyte X399 Aorus Gaming 7 AMD Thread Ripper 1950X 32GB Ram O/S=OpenSuSE Leap 15.2 2 (new) X 4.0TB WD(Blue)[Raid 1] 2 (corrupted existing) X 4.0TB WD(Blue)[ex-Raid 1] HDDs Also QNAP TS/...
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Questions about ddrescue reverse option

In ddrescue you can add option -R (reverse) to read backwards from the source. Will this affect the recovery speed? If you have a log file (mapfile), you can then easily switch between forward and ...
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Old Windows 10 BitLocker SSD does not boot after cloning from it with gddrescue in Linux

I have a problem booting my dad's HP computer after copying data from its SSD to a new SSD. Neither the old, nor the new one boots. Please help, I am afraid I may have lost all my data. I need the ...
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Why can't I get ddrescue to clone a drive with an extended partition?

I'm trying to clone a drive with a number of partitions (using an old live DVD); however, the result ends up with the extended partition being empty. This is the command and the result: mint@mint ~ $ ...
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Why does disk read/write seem to half when running 2 dd processes on 4 different disks?

I'm trying to clone 2 external firewire disks on my debian fileserver using ddrescue. I'm running 2 processes in 2 terminals like so: sudo ddrescue -d -r3 /dev/sdx'/mnt/disk1/image1.img' '/mnt/disk1/...
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Use of ddrescue - saving a failing EXT4 drive -fsck results in all data in to lost+found

I’ve tried….I’m now out of my depth! Any help is very appreciated 😊 I’m currently trying to rescue some data from old disk drives, from the days before I religiously backed everything up. ...
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Disk times out with I/O Errors while using ddrescue

I am trying to use ddrescue on Ubuntu 19.04 to image a failing external hard disk. There is a primary Windows NTFS partition of 220GB and a secondary Recovery NTFS partition of 14GB. ddrescue is able ...
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fixing ntfs partition after ddrescue

I had some really slow disk access and determined my disk was unhealthy. I was still able to see file contents and use most of the drive contents in Windows, but a few files were inaccessible. This ...
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How do I know if the MFT is complete in my recovery of NTFS drive?

I've been running ddrescue on a failed NTFS drive. I don't remember what's on the drive, but I doubt it's important. GNU ddrescue was able to recover about 80% of the drive easily, but then is very ...
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Can ddrescue skip errors faster?

I try to rescue some data from my drive (with an NTFS partition), which out of sudden stopped working. Under Windows it doesn't mount properly into the system, causing a lot of hang-ups. I managed to ...
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ddrescue really slow on failing drive

I have a failing drive which reads at 24 kbit/s.  As it its total capacity is 3.4 TB, it will take probably 3 years to recover the data.  Is there any way if performing a backup of the MFT (table of ...
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How to correctly parititon a drive after a gddrescue with different physical sector size

Alright so I have been thinking about upgrading to an SSD for a while now, since my HDD was old as hell and was already getting some uncorrectable sectors as the replacement sectors were already ...
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ddrescue restore image to same disk

Our 4TB drive was failing. I unmounted the principal partition and ran ddrescue /dev/sdb1 /work2/timhay01/work.img /home/timhay01/work_backup.log --try-again --force --verbose where /work2/ is mounted ...
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Maxiumum recovery of data from old floppy discs with padded bad sectors and multiple passes

I've a collection of old 3.5" floppy disks that I'm looking to recover as much data as possible from. The issue is due to the structure of some of the files, I need the length of all the files to be ...
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Copied failing disk with GNU ddrescue, did I miss something?

Let me explain what's in my mind so you guys can tell me if I make something wrong. I have two external hard drives, one of which is failing(Windows tells me to format it to use it again), the second ...
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Analyse allocated space in Ext4 partition to improve data recovery efficiency

I'm trying to use Lubuntu to recover as much data as possible from a failing 4TB hard disk drive. According to GParted the main partition, formatted in Ext4, contains only 553GB of data. I attempted ...
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rescue data of scrachted bluray/dvd with broken toc/index

My goal is to rescue data from a scratched/broken Blu-ray (probably similar to DVD) I used Linux with ddrescue and recovered 98% of the blocks during its first run: ddrescue -n -b2048 /dev/sr1 ...
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Windows 10, bad blocks, ddrescued to new disk using Linux, boot fails

My wife's Windows 10 machine (a Dell Inspiron 530) had an old 500G SATA disk in it. It developed bad blocks, so rather than wait for it to die and have to buy a new copy of Windows 10 (it was upgraded ...
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How can I attempt to read bad sectors from the end of the disk, using ddrescue?

How can I attempt to read bad sectors from the end of the disk, using ddrescue? I have dynamic volumes and the LDR is kept at the end of the disk, unlike MBR. I remember that I've tried --reverse but ...
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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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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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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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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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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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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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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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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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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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