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

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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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2answers
25 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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18 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
8 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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20 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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7 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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11 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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48 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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17 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
24 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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389 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
27 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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80 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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32 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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13 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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1answer
55 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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1answer
48 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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2answers
33 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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3answers
146 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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63 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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1answer
69 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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83 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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1answer
49 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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2answers
644 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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34 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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22 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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2answers
47 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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1answer
50 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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2answers
3k views

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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42 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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28 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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145 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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2answers
48 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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1answer
46 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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1answer
54 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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0answers
49 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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3answers
24 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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2answers
43 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
101 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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14 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
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1answer
56 views

dd immidiately completes but actually needs sync

I use dd to copy an iso to a USB drive. I have a SSD so it reads it very fast however I have a USB 2.0 drive, which is at most 480 Mbps but it says it copied with 404 MB/s, which is impossible. I need ...
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1answer
238 views

Two 2TB drives, why is dd is almost 8 times faster erasing one?

I have two 2TB drives: /dev/sde WCD WD20EZRX-00D8PB0 Firmware revision 80.00A80 (new consumer-grade WD Green series) /dev/sdf WCD WD2002FYPS-01U1B1 Firmware revision 04.05G05 (old pro-grade server ...
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2answers
101 views

Does dd stop when the disk is full?

If I issue the following command to completely erase a disk, will it automatically stop when the disk is full, or do I need to specify the count option?: sudo dd if=/dev/zero of=/dev/disk7 bs=64m I ...
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158 views

Mount Core Storage partitions on image of hard drive created with ddrescue

How do I mount a whole-disk image with an encrypted CoreStorage partition? Update: I found the answer! It was super-simple: hdiutil attach -nomount somePath.img The "nomount" flag is critical ...
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1answer
40 views

dd MBR and one partition

I have 2 partitions on a drive and I need to use dd to create a new image of just the MBR and second partition. Here is the output of fdisk -l /dev/sda Device Start End Blocks ...
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1answer
46 views

dd a partition and keep device structure

How can I dd a partition while keeping its device structure? Source device: [root@cal-7-3 ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 37.3G 0 disk └─sda1 8:1 0 ...
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1answer
38 views

How can we create an image from an entire disk?

I've tried clonezilla live cd, and I got an image but in a kind of folder. I would need an .img file or something because afterwards I will use some images together, but that is other story. I also ...
2
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1answer
54 views

Hex of filesize

I am following a tutorial on few kernel dev. I encountered an operation where I have to use dd like dd ... if=PBL.bin of=... count=block_number The block_number variable is defined to be as The ...
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3answers
792 views

How to get Linux to be loaded to RAM?

I'm soon to acquire several new computers on the grounds that I wipe their hard disks. I don't need the drives to be randomized, just zeroed out with dd. How can I can boot Linux from a flash drive ...
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1answer
31 views

Writing past the end of the drive with dd?

Suppose I have a drive with 10000 512b sectors. If I do sudo dd if=/dev/zero of=/dev/disk2 skip=99999 count=10 what will happen? When I tested this with a real drive, dd's output suggested that ...