[Re: Unable to write to CD-R]
norm at etherealconsulting.com
Sat Sep 4 08:10:35 PDT 2004
-------- Original Message --------
Subject: Unable to write to CD-R
Date: Fri, 03 Sep 2004 15:56:45 -0500
From: Norm Vilmer <norm at etherealconsulting.com>
To: freebsd-questions at freebsd.org
I am having trouble burning an iso image to a CD-R using FreeBSD 4.10.
I have tried using burncd , cdrecord, and growifofs, all appear to have
basically the same problem (see details below) "Operation not
permitted". One thing that bugs me is that dmesg reports my drive as a
I am not sure if this is the problem or how to addressing correcting it.
Note: the BIOS reports the drive to be TOSHIBA DVD-ROM SD-R6112 1031,
not a DVD-RW.
Can anyone give me some direction as to what I should try next, or
better yet, how I can get the burner working?
FYI: I read the CD-Writing Howto and several other articles and followed
the instructions therein to the best of my ability (you be the judge).
- logging in as root;
- adding "device atapicam" to the kernel configuration and rebuilding
- creating /etc/devfs.conf as follows:
link acd0 cdrom
link acd0 dvd
perm acd0 0660
perm cd0 0660
perm pass0 0660
perm pass1 0660
perm pass2 0660
perm pass3 0660
perm xpt0 0666
- installing cdrecord, dvd+rw-tools
- ensure that the drive can read CD's and DVDs
- running ./MAKEDEV pass10 in the /dev directory
also added these
mount -t cd9660 /dev/cd0 /cdrom # works fine CD's and DVD's
Here's some things I tried:
burncd -f /dev/acd0c -s 12 data 5.2.1-RELEASE-i386-disc1.iso fixate
burncd: open(/dev/acd0c): Operation not permitted
Cdrecord 2.00.3 (I386 .....
cdrecord: Operation not permitted. Error opening /dev/pass0 Cam error
opendevice: coundn't open passthr. Cannot open SCSI driver.
growisofs -dvd-compat -speed=4 -Z /dev/cd0c=5.2.1-RELEASE-i386-disc1.iso
:-( unable to cam_open_pass("/dev/pass0", O_RDWR): Operation not permitted.
dmesg |grep DVD
acd0: DVD-R <TOSHIBA DVD-ROM SD-R6112> at ata1-master UDMA33
cd0: <TOSHIBA DVD-ROM SD-R6112 1031> Removable CD-ROM SCSI-0 device
ATA channel 0:
Master: ad0 <TOSHIBA MK8026GAX/PA001G> ATA/ATAPI rev 6
Slave: no device present
ATA channel 1:
Master: acd0 <TOSHIBA DVD-ROM SD-R6112/1031> ATA/ATAPI rev 5
Slave: no device present
<TOSHIBA DVD-ROM SD-R6112 1031> at scbus1 target 0 lun 0 (pass0, cd0)
MB: VIA EPIA-CL10000, 512MB RAM, Award BIOS 6.00pw
Burner: Toshiba SD-R6112 DVD-RW
Andrew L. Gould wrote:
Were you logged in as root?
Norm Vilmer wrote:
Sorry about the last response, I think I have my mail client setup
better for text and continuing the message at the botton rather than the
Yes. I was logged in as root. I also played with the permissions
in /dev giving the u=rw,o=rw,u=rw, but it did not do anything so I put
the permissions back.
Is it possible the OS thinks the device is a read-only device? How Do I
go about debugging this problem, i.e., can I find out where the problem
is in the code? Can I get a more verbosity show why the operation is not
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