Burning iso images with wodim loses 2048 bytes at the end

Posted by Grumbel on Super User See other posts from Super User or by Grumbel
Published on 2010-06-21T23:38:28Z Indexed on 2011/01/13 22:55 UTC
Read the original article Hit count: 240

Filed under:

ubuntu

|

iso

|

images

|

verification

If I burn an iso image with:

wodim -data  dev=/dev/scd0 in.iso

and then read it back out with:

dd if=/dev/scd0 of=out.iso

The resulting files are not identical, out.iso is 2048 bytes shorter then in.iso. What is going on here and how can I fix it?

Using Ubuntu 10.04 and Wodim 1.1.10

PS: dd always ends with an Input/output error, not just with this CD, but with all of them. I think its just a limitation of dd, but an explanation why it happens and how to avoid it would be welcome as well.

© Super User or respective owner

Related posts about ubuntu

Cannot update, apt-get cannot fetch index files

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have a fresh install of Ubuntu 11.10 from the iso 'ubuntu-11.10-desktop-amd64.iso'. I installed this in VMWare Fusion 4.1.1 running on OSX 10.7.3. When setting up the VM, I allowed easy install to take care of creating my user and installing VMWare tools. No problems during installation, everything… >>> More
'sudo apt-get update' error on Ubuntu 12.04

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
When I type in 'sudo apt-get update' I get this mohd-arafat-hossain@TUD:~$ sudo apt-get update [sudo] password for mohd-arafat-hossain: Ign http://bd.archive.ubuntu.com precise InRelease Ign http://bd.archive.ubuntu.com precise-updates InRelease Ign http://bd.archive.ubuntu… >>> More
Opening Skype, Opera, OpenOffice logs me off

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Whats common among Skype, Opera, OpenOffice in Ubuntu ? Whenever I open these applications I get logged off and shows back me the login screen. This started happening since the 10.10 upgrade. Forgot to mention : Yes, its x64.Each time I open these applications, the UI shows and then crashes. I… >>> More
Update information outdated

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have a warning triangle that my update information is outdated, the last update was 12 days ago. I use Ubuntu 11.10. A run of sudo apt-get update produces the following output: Ign http://ppa.launchpad.net oneiric InRelease Ign http://de.archive.ubuntu.com oneiric InRelease … >>> More
ubuntu/apt-get update said "Failed to Fetch http:// .... 404 not found"

as seen on Server Fault - Search for 'Server Fault'
Hi all, I'm trying to run apt-get update on ubuntu 9.10 I've configured my proxy server and I can access the internet without any problem: /etc/apt# wget "http://www.google.com" Resolving (...) Proxy request sent, awaiting response... 200 OK Length: 292 [text/html] Saving to: `index.html' 100%[=================================================================================================================================>]… >>> More

Related posts about iso

How to create multiboot flash drive

as seen on Super User - Search for 'Super User'
I've found a guide here: http://www.pendrivelinux.com/boot-multiple-iso-from-usb-multiboot-usb/ And found this menu.lst in my flash drive, which seems to be the one that I'm seeing when I boot using my flash drive: # This Menu Created by Lance http://www.pendrivelinux.com # Ongoing Suggested Menu… >>> More
How to boot live iso images?

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I found that it can be done with loopback as follows menuentry "Lucid ISO" { loopback loop (hd0,1)/boot/iso/ubuntu-10.04-desktop-i386.iso linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=/boot/iso/ubuntu-10.04-desktop-i386.iso noprompt noeject initrd (loop)/casper/initrd.lz } But it works… >>> More
mkisofs creating iso file with no error or warning but iso corrupted

as seen on Super User - Search for 'Super User'
I'm trying to make a dvd from mpeg2 files. First of all i'm on windows 7. I'm using the following binaries: jpeg2yuv mpeg2enc mplex spumux dvdauthor Now everything is fine till this point absolutely no errors, but then i'm using mkisofs to make the iso file also no errors or warnings. It creates… >>> More
Place a bootable ISO on a USB drive?

as seen on Super User - Search for 'Super User'
What's the best way of placing a bootable ISO on a USB drive? ISOs such as a live Linux preview disk, Windows installation ISO, etc. >>> More
How to mount an iso image on linux?

as seen on Stack Overflow - Search for 'Stack Overflow'
I need to mount an ISO image on linux. On Windows I use Daemon Tools, but how is this done on Red Hat Enterprise Linux 5.4? Thanks in advance >>> More