Linked Questions

I recently realized we can use cat as much as dd, and it's actually faster than dd I know that dd was useful in dealing with tapes where block size actually mattered in correctness, not just ...

I have a laptop with Debian on it, and I am going to sell this laptop. Would it suffice to erase the Debian installation before selling it to completely clean up my laptop from my personal data, and ...

ORIGINAL QUESTION: If I have 2 identical hard drives with the following characteristics: SATA 6.0 Gb/s 5400 rpm 3TB How long should a full dd copy take to complete? So far it's been running for 5 ...

What's the difference between two dd commands that have different bs and count values, as long as they multiply to the same? For example: dd if=/dev/random of=aa bs=1G count=2 dd if=/dev/random of=aa ...

I need to copy one disk to another. I tried with the command below and it takes nearly a day to copy 1 TB of disk. dd if=/dev/sda of=/dev/sdb I have tried the same on a Unix system with the ...

I have a 1 TB file. I would like to read from byte 12345678901 to byte 19876543212 and put that on standard output on a machine with 100 MB RAM. I can easily write a perl script that does this. ...

I'm using dd to copy data from an old hard drive to a new one. I want to be sure that the data's integrity is secure. On this answer, Gilles says If [dd] terminated successfully, then the backup ...

Short version: In what circumstances is dd safe to use for copying data, safe meaning that there is no risk of corruption due to a partial read or write? Long version — preamble: dd is often used to ...

Background I'm copying some data CDs/DVDs to ISO files to use them later without the need of them in the drive. I'm looking on the Net for procedures and I found a lot: Use of cat to copy a medium: ...

I've used dd to clone disks like this: dd if=/dev/sdb of=/dev/sda bs=4096 conv=notrunc,noerror,sync And it's always worked fine. Any and all docs on 'dd' take pains to remind you that the target ...

I am under the following restrictions: I have a 1.0 GB .zip file on my computer which contains one file, a disk image of raspbian. When uncompressed, this file is 3.2 GB large and named 2015-11-21-...

I just made a backup of an entire hard drive (50GB) over ssh via: dd if=/dev/hda | buffer -s 64k -S 10m | ssh myuser@myhost "cat > ~/image.img" What's now the best way to check the integrity of ...

I will be backing up a large (750GB) disk to an external USB disk using dd. Should I be using redirection or piping? Which is more efficient? Or is there a difference? Also, what is the best block ...

I'm overwriting my hard drive with random data using the good old dd: dd if=/dev/urandom of=/dev/disk/by-uuid/etc bs=512 It's a 2TB array and my MacBook (running Linux, ok?) can only write data at ...

I am looking for a method to backup a whole disk in case something is screwed up... I don't even know what to install on some special devices of the server, and every time it is not the same. ...