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.

Filter by
Sorted by
Tagged with
0
votes
2answers
48 views

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/...
0
votes
1answer
77 views

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. ...
0
votes
2answers
38 views

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 ...
2
votes
0answers
97 views

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 ...
1
vote
0answers
66 views

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 ...
1
vote
1answer
131 views

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 ...
0
votes
1answer
115 views

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 ...
0
votes
0answers
70 views

Ddrescue got stuck at 97% and makes no progress. Should I change the command?

I've been trying to rescue my old broken drive for the last three weeks but ddrescue running under ubuntu basically got stuck at 97% of a progress. I used the following code sudo ddrescue -f -r0 /...
0
votes
1answer
41 views

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 ...
1
vote
0answers
48 views

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 ...
1
vote
1answer
153 views

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 ...
0
votes
1answer
174 views

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 ...
2
votes
0answers
102 views

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 ...
0
votes
0answers
109 views

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 ...
0
votes
0answers
67 views

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 ...
0
votes
1answer
303 views

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 ...
1
vote
2answers
451 views

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....
0
votes
2answers
537 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 ...
0
votes
1answer
984 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 ...
1
vote
1answer
129 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 ...
1
vote
1answer
120 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 ...
0
votes
3answers
450 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 ...
0
votes
1answer
537 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 ...
0
votes
0answers
39 views

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 ...
0
votes
0answers
197 views

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 ...
1
vote
1answer
1k 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 ...
0
votes
0answers
181 views

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 ...
1
vote
1answer
294 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 ...
1
vote
0answers
256 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 ...
0
votes
1answer
188 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'...
2
votes
1answer
311 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 ...
1
vote
1answer
225 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 ...
1
vote
0answers
364 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. ...
0
votes
2answers
572 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 ...
0
votes
1answer
658 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 ...
1
vote
2answers
2k 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 ...
3
votes
1answer
225 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 ...
1
vote
1answer
428 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 (...
0
votes
1answer
374 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 ...
5
votes
1answer
2k 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 ...
1
vote
0answers
218 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 ...
2
votes
1answer
627 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 ...
1
vote
3answers
2k 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 ...
3
votes
1answer
828 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. ...
0
votes
0answers
352 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 ...
2
votes
1answer
3k 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 ...
0
votes
1answer
168 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) ...
0
votes
1answer
457 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 ...
1
vote
1answer
1k 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 ...
3
votes
1answer
3k 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 ...