Questions tagged [dd]
This command is used to do low level copying of data.
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Cloudmin backup size
we are using Cloudmin under CentOS 7.9. to manage Xen virtual machines that use LVM. It's all backed up once a week (via Cloudmin's built-in backup system, which I think just uses dd). Last week I ...
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How to rebuild the filesystem of a recovered partition
I managed to ruin a server drive by trying to clone it to another drive with dd. In the process, the original boot and sda1 partitions were overwritten.
I immediatly stopped using the drive,I made an ...
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How to recover partition/filesystem from failed dd command
I have a server with two SSDs of 250GB each.sda contained all my stuff while sdb was empty. I was trying to copy drive sda to drive sdb using the following command:
dd if=/dev/sda of=/dev/sdb conv=...
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How to determine/ensure max bytes dd is copying some data that's available in a partition
How do we determine and next ensure the max bytes copied, i.e. read and written, when dd is copying data available in a partition into another one/device with both the same ext4 filesystem ?
as the ...
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Cloning data from a damaged SSD
The SSD went into read-only mode, so you need to move the partition to a working SSD, but I encountered the fact that the LVM size is different:
#lvm pvscan
PV /dev/sdc3 VG pve lvm2 [&...
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dd: failed to open ‘/disk1/boot1.img’: Structure needs cleaning
Executing this Command :
dd if=/dev/sda1 of=/disk1/boot1.img
I got this Error :
dd: failed to open ‘/disk1/boot1.img’: Structure needs cleaning
I tried that Command on my centos machine and got that ...
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Windows Images created with dd cannot be restored
I used a live USB Linux system to create images of Windows Installations (Win 8 and 10) on hard drives like this:
dd if=/dev/sdb bs=64k conv=noerror, sync | gzip -c > /dev/sdc1/win.img.gz
However,...
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copying one virtual raid disk to another using dd
Using a Dell-Perc Raid controller in Ubuntu I have a virtual disk as a raid 0 array composed of 4 physical drives (1Tb SSDs).
I would like to copy the virtual disk onto another virtual disk also raid ...
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Thin-LVM readonly mode
I use this command to move data of one thin lv to another lv on separate server.
dd if=/dev/vg/my-lv bs=24M | throttle -v -s 512 -w 2 -m 2000 | ssh -oStrictHostKeyChecking=no -i /var/my-ssh-keys/...
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Can I mksqashfs a whole Mint 20 OS then restore with unsquashfs on a different drive?
I have a very strict system with the bare minimum applications on for security reasons since I work with medical data.
Sometimes the laptops we use messup for one reason or another, won't boot, can't ...
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Using DD to clone a 600GB drive using SSH to remote location with only 60 GB of allocated data [server migration]
Please, excuse my horrible english. I'm triyng to find the way to clone a HDD server to a remote destination location, using SSH and, if possible, compress data on-the-fly to minimize unnecessary data ...
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Disk doesn't show any partition table or partition changes
I wanted to clone an encrypted drive to a new drive, so I set up CloneZilla to do a disk-to-disk clone. At the beginning, it said 9 hours to run, so I let it run overnight. The next day, it had 145 ...
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dd the entire SD card to one partition on HDD [closed]
This particular question is related to Raspberry Pi, but in fact, this is a general question.
So, I have an SD card with RPI system running on it consisting of two partitions:
Disk /dev/mmcblk0: 59.5 ...
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Best way to remove text from the beginning of a huge file
I have a huge MySQL backup file (from mysqldump) with the tables in alphabetical order. My restore failed and I want to pick up where I left off with the next table in the backup file. (I have ...
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What's the best means to clone the root linux hard drive to a new drive?
I bought a new enterprise grade SSD to replace my Samsung SSD. It was $500, not cheap. Anyway, the purpose is to have a more reliable and longer-lasting root hard drive, since a non-enterprise drive ...
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Will this DD command work?
I've mounted my Google drive and would like to make a live backup image of my raspberry pi. Would this command work?
sudo dd status=progress if=/dev/mmcblk0 bs=10M conv=sync,noerror | gzip -9 - | dd ...
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Why Linux "dd" is erroring with "no space left on device" while copying a single partition to a smaller device?
I'm trying to copy the single partition /dev/sda1 to /dev/sdc1, but I'm getting the error "no space left on device" and I honestly don't get why.
I'm working on an Oracle Cloud ...
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Can't make good size image with the command DD
Need to make an image disk of my DD. This a is a 4to hard drive with 2 partitions (total used :1,7 TO).
How to get an 1,7 TO correct image with the dd command ?
Disque status with fdisk
Used :
dd if=/...
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df shows negative bytes used.... only during dd
I have begun a dd to copy a partition on one usb drive, to a 2nd usb drive. While I have freshly reformatted the destination partition (/dev/sdc1), and it checks out with fsck normally and shows it is ...
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Does it matter to partition something before dd?
Normally, to burn an ISO to a disk, let's say an ISO for installing Ubuntu, we dd to the /dev/sda, not to the partition like /dev/sda1, so in this case, where the target file is /dev/sda which is ...
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desperate attempt to head off RAID 0 failure, can i copy a disk with dd?
A colleague has been using a 10TB RAID 0 array to edit a film. He suddenly realized it's 98% full. The array has started seriously acting up, but cooperates grudgingly if you shut down all processes ...
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speed difference between FS created by LVM and parted cmd
I was testing read/write operation on FS to check speed via dd cmd.
/app - created with LVM
/app1 - created with parted
when I run below cmds, can see huge diff in speed for both operation with same ...
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How to resize img file created with dd on LUKS-LVM partition?
I have installed a new Debian 10 on /dev/sda with LUKS + LVM. It has the following partition structure:
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 79G 0 disk
├─...
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Can I migrate a Windows 10 with a license key to another computer using dd? [duplicate]
Not trying to do anything malicious or violate copyrights. Just out of pure curiosity.
If dd creates a full clone of a disk, will it work if I use dd to make a full copy of windows 10 with a license ...
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Clone disk with multiple partitions using dd
I have used dd before to clone hard drive's but I'm now attempting to clone an entire hard drive consisting of 3 partitions to another drive.
My partitions are named nvme0n1p1 to 3, I tried leaving ...
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Virtualbox not recognizing GRUB
I ripped a Linux Mint partition into a file using the dd command:
sudo dd if=PART_PATH of=OUTPUT_PATH/ubuntu.bin
Then I converted it into a *.vdi
VBoxManage convertdd PATH_TO_ubuntu.bin ubuntu.vdi --...
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where is the disk capacity stored?
In short, if I do dd disk-to-disk (e.g. /dev/sda to /dev/sdb), is the capacity of the whole disk also copied?
For example, if sda is actually 1TB and sdb 2TB, after the dd, which would a Linux system ...
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How can I transfer a dedicated bare metal server into a VM?
I have the following problem: We have a dedicated (bare metal) hardware server (Debian 10) on which we have no direct physical access. Now I want to transfer all data and applications that are on this ...
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How to read binary contents of free disk space in CentOS
Is there a way I can use dd or another tool to view the binary contents of free disk space in CentOS? In case it matters, it's a Linux logical volume with XFS format, holding data only (not a common ...
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DD of LVM Partition to another disk drive not working - no space left on device
I have a vmdk attached to my Linux VM instance (/dev/sda). The disk has 2 partitions, as shown below:
Disk /dev/sda: 17.2 GB, 17179869184 bytes, 33554432 sectors
Units = sectors of 1 * 512 = 512 ...
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Creating a backup ignoring unallocated space with GPT table
I want to create a full disk backup of a linux installation (including gpt, bootloader).
The system is installed on a 128GB SSD but only ~32GB are used with partitions, the rest is unallocated space.
...
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How to verify if a disk was ever written to
How can you verify if a disk is fresh and has had no write from the factory? I have a client that needs to make sure that the disks he revived are cleaned and weren't tampered with from the time it ...
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Linux - How to clone and restore the root(/) partition on a running system
I have a specific situation with one remote Debian(Stretch) server. Mainly there is no one at the site and I need to do some risky upgrades and reconfigurations remotely.
I'm looking for a way to ...
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DD copy fails because output device path change during copy
I'm trying to copy an external USB hard drive to another using DD.
my command:
dd if=/dev/sdb of=/dev/sdc conv=noerror,notrunc iflag=noatime status=progress
I'm using a live debian 10 distro.
...
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How to compress and split a backup on a remote ftp server avoiding empty space and using dd
The case is the following:
we have two servers, a remote server with ONLY an FTP access, and a local server linux where we have to configure a script for backup all system using dd command. The ...
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DD command to destroy data
Should I delete the important files of the disk and then boot into live disk and run dd command or is it okay to run dd on /dev/sda without having to delete?
I'm asking this because I've already ...
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DD data of drive to new drive within VM
I inherited a CentOS 7 vm with a messy disk system. Here's a breakdown:
The VM has 2 hard disks, and the OS has two LVs with luks-encryption on top. Output from lsblk:
NAME ...
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Reduce Volume AWS EBS EC2 LVM Partition
Problem
I have a physical machine with 1 TB disk and it was copied via command line dd, the disk was imported into S3 and successfully converted to AMI. But now I have a cost problem and I need to ...
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How can I automate the installation of an Ubuntu image using a USB device?
I have to automate the installation of a Linux image. The perfect behavior would be that I plug the USB, turn on the device and it runs the dd command in order to flash the image stored in the USB ...
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how can I sync 2 almost identical disk after dd
Lets say I have /dev/sda and /dev/sdb.
Before, I run dd if=/dev/sda of=/dev/sdb bs=128M, and it succeeded.
Then after some time, there is update on first disk, and I want to clone it to second disk....
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The most efficient way to save LVM snapshot to a file
I have a tricky problem with a backup strategy. The problem is with disk performance and so far I cannot do a lot about it (as well as meddle with, let's call it, pipeline design), so I was wondering ...
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Copy LVM Volume Group to a new single hard disk
I have a headless Ubuntu (18.04) server with 3 hard drives each partitioned to a single lvm volume group for a combined size of 6Tb. I recently purchased a new hard drive that is 8Tb and I want to get ...
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Recovering deleted plain text (emails) files from raw disk image
I'm hosting my own linux mail server for my family. Yesterday my father lost all the mails in his Inbox folder. I'm still not sure whether it's due to a terrible user error or compromised password, ...
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Unable to mount cloned partition via ddrescue
I have a problem with mounting the cloned partition. To clone it, I used as root:
ddrescue -f -n /dev/sda3 ./sda3_rescue.img ./rescue.log
The partition which I cloned, was a broken NTFS partition. ...
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Why does dd make the host unresponsive?
As root I yesterday did
dd if=/dev/zero of=/var/lib/libvirt/images/dat.img bs=1G count=1000
and for many hours it made the server completely unresponsive.
The raid controller is an HP P410 with 4 ...
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Bad Sector on disk causes the whole server to crash
Our dedicated server's hard disk was recently diagnosed with bad-sectors, and each time certain data on the disk are about to get accessed, the whole server goes non-responding before i i issue a ...
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dd "no space left on device" cloning SSD to USB drive
So I have a weird error, while dd'ing partition 3 (partition table below) from my laptop's SSD to a larger USB drive with an identical partition table. After writing ~3-4GB (expecting to write >75GB), ...
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HDD cloning with dd
I'm cloning a larger HDD(750GB) to a smaller SSD(250GB). I shrunk the partitions and there is only 83gb of used space. (I defragmented and did a chkdsk). Also, sum of partition sizes is smaller than ...
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Is it faster to wipe out multiple hard disks with dd=/dev/zero simultaneously?
I have 3 hard disks 1T each. I want to wipe them out completely. I decided yo use dd like so:
dd if=/dev/zero of=/dev/sdb bs=1M
dd if=/dev/zero of=/dev/sdc bs=1M
dd if=/dev/zero of=/dev/sdd bs=1M
...
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Cloning multiple SATA drives using dd with the assistance of software RAID1
So, I clone lots of Windows-based NTFS drives from images each day and I'm halfway through a project that could potentially help me and others to speed up this process dramatically.
I currently have ...
