Review your favorite Linux distribution.
Go Back > Forums > Linux Forums > Linux - Newbie
User Name
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!


  Search this Thread
Old 02-15-2007, 11:10 PM   #1
LQ Newbie
Registered: Feb 2007
Posts: 5

Rep: Reputation: 0
dd makes bad copy of data dvd

TTNot sure if two months using Linux still qualifies me a s a newbie, but I think I must be doing something very simple or obvious wrong.

I'm using centOS4.4, and need to restrict myself to using dd i.e. mkisofs (etc) is not an option at the moment.

I've followed several examples indicating the following will make an exact copy a dvd ()not this is a data dvd, no encryption etc):

dd if=/dev/hdb of=/tmpt/mycopy.iso
dd if=/dev/hdb of=/tmpt/mycopy.iso bs=2048

In both case the dd completes without reporting any error.
However when I open the iso file, by double clicking on the iso file using Gnomes file browser, I see several things that are incorrect:
1) The file name T200609T.IDX doesn't exist, i.e. there is an file icon there but no name, and the size doesn't match the original.
2) The file T200609T.BIN dosen't exist (or these file maybe interchanged)
2) Other file names have ';1' appended to them....?

I can browse the dvd without any problem in Linux.

I'm at a total loss - I haven't seen anyone else report a similar problem.
Does anyone have any suggestions?
Thanks in advance
Old 02-16-2007, 12:12 AM   #2
Registered: Jan 2005
Distribution: Solaris, Linux Fedora Core 6
Posts: 170

Rep: Reputation: 30
Originally Posted by pitcat
<...> However when I open the iso file, by double clicking on the iso file using Gnomes file browser, <...>
What utility does the Gnome file browser use to open the iso file? I think you want to mount it first.
mount -t iso9660 <some mount point> <filename.iso>
Old 02-16-2007, 12:51 AM   #3
Registered: Jan 2007
Posts: 133

Rep: Reputation: 15
should actually be "mount -t iso9660 -o loop <some mount point> <filename.iso>"


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
DVD writes bad data to disk when growisofs is executed from script akiladila Linux - Hardware 4 04-17-2006 05:30 PM
psmouse.c: bad data from KBC - timeout bad parity Dobs01 Linux - Hardware 2 02-19-2006 12:02 PM
Cannot Copy files from DVD data disk bear2x Linux - Hardware 4 06-23-2005 10:03 AM
mount: wrong fs type, bad option, bad superblock...(cdrom,dvd and floppy) SpItoS Mandriva 14 11-12-2004 02:27 PM
Burn Data DVD... Read Data in Linux and Windows SaintStrive Linux - Newbie 3 09-18-2004 05:04 PM > Forums > Linux Forums > Linux - Newbie

All times are GMT -5. The time now is 03:56 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration