A common Unix program whose primary purpose is the low-level copying and conversion of raw data.

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Does dd require CAP_SYS_RAWIO?

A little while ago, I found out from this that there used to be a way to semi-permanently disable the ability of even root to modify immutable & append-only flags (lcap CAP_LINUX_IMMUTABLE) or ...
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36 views

Making a VDI image bootable for VirtualBox

I created a disk image of a Ubuntu (12.04) system by using dd if=/dev/sda6 of=xxx.img The VDI image was created by using vboxmanage clonehd xxx.img xxx.vdi --format VDI When I create a new VM ...
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33 views

windows equivalent for dd

I need to read and write various flash card images. The way i always did this in linux was with dd, and that did the trick. What is a good windows equivalent? Simply put, i need to be able to read an ...
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26 views

Can dd copy raw data from hard drives when operating system cannot recognize file system of partitions of hard disks?

As the title says, can dd copy down from hard disks even when operating system cannot recognize file system of partitions of hard disks?
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44 views

Understanding the dd command in Linux

can someone explain to me what this command does: dd if=/dev/zero of=10MBfile1 count=10000 bs=1024 which produces this output: 10000+0 records in 10000+0 records out 10240000 bytes (10 MB) copied, ...
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49 views

How can I identify and read only free-space junk data from EXT4 partition?

I have cloned an EXT4 partition via raw dd command from a Galaxy Nexus phone. How can I identify and read only free-space junk data from the EXT4 partition? I need to recover some WAVE samples(I'm ...
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34 views

Is it possible to clone previous boot disk to new imsm raid array?

A PC with a hard drive 750GB. The hard drive has one partition with Vista and several partitions with Ubuntu 14.04. I mainly work with Ubuntu but occasionaly I boot Vista. Recently, the drive's smart ...
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64 views

Complete wiping of hard drive - shred, wipe or dd?

I need to wipe all data of a number of hard drives, from Ubuntu Linux. I have found three command line tools: shred, wipe and dd. It seems kind of random what people recommend. Sometimes someone ...
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14 views

How to recover files and folders from a dd_rescue image?

My 16 GB USB disk crashed, the filesystem disappeared. I tried to fix it with "dosfsck", but no success, it also has bad sectors. Then I made a disk dump with "dd_rescue" command. I was able to ...
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69 views

How do I wipe a USB drive using dd on cygwin on Windows?

I am trying to use dd to wipe a usb drive using Cygwin on Windows. What should I use for the of argument? dd if=/dev/null of=?
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53 views

Write iso files to usb sticks with dd

So far I have always succeeded at creating bootable USB, until yesterday. I tried creating a bootable USB for Arch Linux, Chakra OS, and Ubuntu this way: Locate my USB stick: lsblk # My drive is in ...
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105 views

Linux Full Disk Backup of a Remote System?

I have a home file server in the following configuration: 4 HDDs of 2TB each 1 USB flash drive running the Debian OS of 8GB I would like to make a full disk backup of the OS flash drive to another ...
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55 views

Cloning md partitions for recovery

I have a failed software RAID5 (3x500GB disks) that I'm trying to recover. I don't want to try some of the more risky steps on the actual disks, so I want to clone them to new partitions on a new 3TB ...
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1answer
19 views

Expand size of disk image after dd operation

Background : I used the debian wheezy raspberry pi build, a generic kernel image with qemu to build a raspberry pi image. I copied the resulting image to the SD card with dd. That SD card is a 16 gb ...
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1answer
48 views

Does dd care when cloning from smaller hdd to bigger hdd?

Does DD care about hard drive size? I currently have a smaller 500GB HDD that i want cloned to a 1TB SSD. Will it clone without a problem relating to size? will there be non partitioned space? was ...
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10 views

backup wlc2504 cf card

I dd imaged a CF card for a WLC2504 before upgrading to a new FUS image and now have a backup image of the new running software as well. My question is can I use the pre-update CF image if necessary ...
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17 views

Moving Select Partitions and MBR From Old Drive To New

On my current drive I have a dual boot system setup (two different versions of ubuntu.) I want to migrate to a new hard drive but I don't wan't to keep one of the Ubuntu installations. So here is how ...
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91 views

fdisk doesn't see ssd, clonezilla does but fails anyway

I'm trying to clone a Windows 7 Pro installation from one SSD to another. The current SSD is nearly full, so I'm cloning it to a larger disk. My problem is that there is something about the source ...
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115 views

Disk Cloning Probelm

I'm trying to clone a Windows 7 Pro installation from one SSD to another. The current SSD is nearly full, so I'm cloning it to a larger disk. My problem is that there is something about the source ...
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1answer
70 views

Use dd to copy an HFS+ volume in linux

I have a friend's HFS+ external drive from her Macbook. We created a new similarly-sized partition on a different external drive, also using the Macbook. From everything I understand about dd, it is ...
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420 views

DD the fastest way

I have this "disk list" table: /dev/disk2 #: TYPE NAME SIZE IDENTIFIER 0: FDisk_partition_scheme *16.4 GB disk2 ...
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1answer
38 views

'dd' command on Damn Small Linux?

I looked at the package list of DSL, and I don't see 'dd'. For example I would like to restore /dev/sdb from an .img file like so: dd bs=1M if=/home/myname/image.img of=/dev/sdb What command do I ...
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177 views

Any way to boot a OpenSuSE installation DVD ISO and install from it, without burning it to a DVD?

Because the DVD image is too big to fit on a disk, I would like to install system using sequence of commands like this, running from an Ubuntu live CD: cd /tmp wget ...
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58 views

dd and gparted and Lubuntu disks all acting funky

So I am trying to write some iso images over to an 8 GB USB drive and this happens. The first iso didn't seem to actually write and when I went to boot it in my other box, it booted to a unetbootin ...
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19 views

Make Windows boot after sector-wise copying from 4 GB flash card to 8 GB

I've Windows Embedded XP system installed on a 4 GB Compact Flash card (which is visible as IDE drive to operating system). I've used dd to move it sector-to-sector to another flash drive which is 8 ...
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116 views

Hard drive checking by using of dd and md5sum tools

I bought new external USB 3.0 hard drive WD Elements 2 TB and decided to check it by using dd, head and md5sum tools. First I zeroed all hard drive: root@yurko-laptop:/home/yurko-laptop# dd ...
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116 views

What's the difference between dd's command options bs=1024 count=1 and bs=1 count=1024

Consider the following two commands both creating a dumb 1KB file dd if=/dev/urandom of=test.file bs=1024 count=1 dd if=/dev/urandom of=test.file bs=1 count=1024 The first command uses a block ...
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69 views

Is there a way to output the status of dd (on OS X) during the copy process?

I am using dd to copy iso images to a thumb drive. Is there a way to output the status of dd during the copy process?
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339 views

Creating a large file of random bytes quickly

I want to create a large file ~10G filled with zeros and random values. I have tried using: dd if=/dev/urandom of=10Gfile bs=5G count=10 it creates a file of about 2Gb and exits with a exit status ...
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115 views

how to make a correct bootable usb of a linux distro?

well I have been installing different distros of linux from by usb from time to time. And I always followed same method which until today stopped working for me. So I use to format my usb with ...
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118 views

Can I pause dd writing, remove the medium, mount it again and continue without causing I/O error?

I'm creating a compressed image of a laptop's internal drive into an external USB disk using a LiveCD GNU/Linux system. Also I use pv to monitor the progress. Here's how the command looks like: dd ...
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113 views

cannot boot kali usb

I downloaded - from http://www.kali.org/downloads/ - Kali Linux 32 bit ISO and then sha1sum-ed. blkid shows my usb on /dev/sdc1 then dd if=<path-to-kali.iso> of=/dev/sdc (I have also ...
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74 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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2k views

changing permissions of Read-only file system in linux

i use this command to make a bootable flash disk of linux mint sudo dd if=~/Desktop/linuxmint.iso of=/dev/sdx oflag=direct bs=1048576 it's work, but now my flash disk is lock and i can't change ...
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41 views

Will copying to an identically sized disk cause issues if the output disk has bad sectors?

I just made a copy from one 160gb disk to another, identical 160gb disk, using the command sudo dd if=/dev/sda of=/dev/sdb (run on a live Ubuntu CD) However, the SMART test on /dev/sdb shows 20 ...
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24 views

Creating a data rescue partition

I am trying to recover deleted files from a Windows HDD (320 Gb) with multiple partitions. Have three questions: Will dd if=/dev/sdb of=~/image_sdb.img bs=4096 create an image of all partitions ...
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50 views

Does `dd` work on physical level or on filesystem level?

When you delete a file from a device, let's say an USB stick, then (without doing any further stuff) only the entry in the filesystem is deleted, the raw bytes of this file are still on the device ...
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56 views

How can I backup the entire file system on a backup image file?

I am pretty new to Linux. I am configuring my RaspBerry that use RaspBian (that is a minimalistic Debian distribution). Before changing some settings I want to have a backup of my entire system in ...
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Why is piping 'dd' through gzip so much faster than a direct copy?

I wanted to backup a path from a computer in my network to another computer in the same network over a 100 Mbit/s line. For this I did dd if=/local/path ...
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43 views

How to chroot into memory disk so that hard disk can be unmounted?

What I want to achieve is to be able to backup my hard disk over ssh like the following without the need to boot from a live CD / rescue media: dd if=/dev/sda | gzip -1 - | ssh user@hostname dd ...
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31 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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231 views

Can dd be used to copy an SSD with an OS?

The OS in question is Windows 8.1 Both laptops have 100+ gig SSDs Now suppose I really don't want to bother installing the OS again, can I just use a linux USB stick, dd the whole SSD drive to ...
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65 views

How to unpack dd file on Windows?

Is it possible to unpack files created with linux dd tool on Windows? I have tried that tool http://www.chrysocome.net/dd, but it crashes under Windows 7. Any ideas?
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49 views

Windows Hard Drive swap [duplicate]

I am going to be moving a HDD from one computer to another identical one. Can I just switch out the hard drives, or will I have to dd the old one onto the one that is already in there?
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68 views

Can dd achieve better bandwidth/speeds on a USB 3.0 bus? [closed]

As the title says--I recently acquired a USB 3 stick that I'll mostly be using for moving ISOs/images around between computers. With the increased transfer rate of USB3, can I deviate from my habitual ...
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62 views

dd destroyed my partition. how do I recover the data? [duplicate]

I used the command dd if=/dev/mmcblok0 of=/dev/sda2 to backup my sd card of my raspberry pi (where /dev/mmcblok0 is my sd card and /dev/sda2 is the second partition on my external hdd) ...
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28 views

dd to a Hitachi HDD

Is it safe to perform a dd if=/dev/zero of=/dev/sda bs=512k to an 80GB Hitachi HDD via a bootable linux cd? and format it with a new file system? I hope that won't cause me any problems later, the ...
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51 views

Restoring a disk image with dd

I made an image of a complete disk with : $ sudo dd if=/dev/sdc | gzip -c > my_image.dd.gz When I restore it with : $ gunzip -c my_image.dd.gz | sudo dd of=/dev/sdc I get errors when I type : ...
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2answers
114 views

Move partition data with dd to the right

I need some help to get a dd command line that is moving my partition blockwise to the right. I stumbled upon an error when using tools to image some pcs and now I need to repartiition those machines ...
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15 views

Moving a part of a file with dd

How do I do a memmove for a file on linux? Specifically, will dd work in the following case, when if and of are the same? dd if=test_file of=test_file bs=512 seek=10 skip=0