At Wed, 15 Apr 2009 15:46:20 +0200 CentOS mailing list centos@centos.org wrote:
Michael A. Peters a écrit :
- Am I supposed to be root to use cdrecord and burn an .iso file?
I've found it works much better if you are root.
I tried both, and see: cdrecord complains about not being able to set certain priorities while being run as user, which induces a high risk for buffer underruns. So I have my answer for that.
Another cdrecord-related question. Usually I should be able to copy a CD as simply as that:
$ dd if=/dev/cdrom of=copy.iso
Then insert a blank CD, and:
$ cdrecord -v -eject dev=/dev/cdrom copy.iso
Now I did that for data CDs, and it works very well. I thought, normally this *should* also work for audio CDs, so I gave that a spin. But everytime I try it, dd stops short and gives me an "Input/output error" for /dev/hdc.
While dd *can* be used to copy single-track data CDs, it is better to use the readcd program (comes with the cdrecord package). For audio CDs, the cdda2wav program would be a better option.
I tried three different audio CDs, all three in good state. I can listen to them OK on the PC. But all I get with dd is a zero-byte-length copy.iso file.
An audio CD is not like a data CD. It does not have a 'file system'. It is a collection of data tracks, containing cdda files.
Any idea what's happening?
Niki _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos