dd to burn .iso

roger_heslop · 12-25-2009, 10:44 AM

Linux Mint 'Gloria'

I was attempting to burn an .iso using dd, I had used it before and remembered it being quite simple. However I tried it today with:

sudo dd if=/media/LACIE/OS/iso/linux/red_hat.fedora/Fedora-12-i686-Live.iso of=/dev/cdr1

I noticed it finished very quickly and now the cdr1 file inside /dev is six hundred megs or so. I don't think I can get the old file back so am wondering if I will need to reinstall, or if I should delete that file maybe it will rebuild on start up?

Should have I used another terminal command for burning .iso's to disk?

What might the correct command be?

Any help or knowledge is much appreciated. Thanks!

pixellany · 12-25-2009, 11:23 AM

Why do you want to burn isos from the terminal? I would simply use k3b or Brasero.

I have never heard of burning CDs using DD, but I can't tell you that it is impossible.

I think the normal terminal command is something like "cdrecord" or "wodim". Check the man pages for details.

And---why would that dd command caused you to lose the original file? Also, the large file in /dev is what you would expected if you wrote to a device node which had nothing mounted.

gregorian · 12-25-2009, 01:09 PM

Don't you have to care about the file system? I don't think it's that simple.

smeezekitty · 12-25-2009, 01:12 PM

I am certain that you dd'ed it to the wrong file.
the cdrom /dev varies from distro to distro, computer to computer.

MTK358 · 12-25-2009, 01:49 PM

What's dd?

you can burn CDs from the command line with cdrecord.

roger_heslop · 12-25-2009, 03:20 PM

I tried Brasero first, but it indicated there was an error, and that there might be corrupt files. (I should have md5sum'ed the CD, turns out it burnt fine, but I digress)

I think you're right smeezekitty, that I dd'ed to the wrong file, I am noticing there is a cdrom1 (as opposed to cdr1) file, or pointer, there. Using the dd with /dev/cdrom1 as the output in the command, I get a 'Read-only filesystem' response. Not quite what I had hoped, but makes more sense than what I was seeing previously. After I back everything up (just in case) I'll delete the cdr1 file and reboot.

After looking into the dd command, it may have been that I had used it before to write an iso from an existing CD, not the other way around, I don't see too much when in what I was trying to do when researching it. Cdrecord seems to work just fine, thanks by the way. (I'll repost if I find a way for dd to work)

edcompsci · 01-21-2014, 03:36 AM

see this link

http://www.development-cycle.com/201...f-a-dd-action/

or this:

Code:

 $ dd if=/dev/zero of=/dev/null& pid=$!
[1] 6169
 $ kill -USR1 $pid; sleep 1; kill $pid
7314839+0 records in
7314839+0 records out
3745197568 bytes (3.7 GB) copied, 2.46092 s, 1.5 GB/s
[1]+  Terminated              dd if=/dev/zero of=/dev/null