cdrecord -scanbus output

Permaximus · 04-01-2005, 11:07 PM

Hey, I have a question regarding cd burning. I decided to download phlak and burn the iso so I can boot it. But, I was unable to mount the cdrom with the cd-r. This is the output from cdrecord -scanbus:

Code:

bash-2.05b# cdrecord -scanbus
Cdrecord 2.00.3 (i686-pc-linux-gnu) Copyright (C) 1995-2002 Jörg Schilling
cdrecord: No such file or directory. Cannot open '/dev/pg*'. Cannot open SCSI driver.
cdrecord: For possible targets try 'cdrecord -scanbus'. Make sure you are root.
cdrecord: For possible transport specifiers try 'cdrecord dev=help'.
bash-2.05b#

I executed this command as root and I cannot find the problem. Thanks in advance for the help.

Potatopopper · 04-02-2005, 02:00 AM

I get the same exact error. It seems that a package might be missing in order to burn cds/dvds. I don't understand why the package would be missing from slackware, so I can't really help. Hope someone can shed some wisdom on this matter.

Oliv' · 04-02-2005, 06:31 AM

Hello,

the problem is due to the lack of the /dev/sr (or /dev/pg or /dev/sg) device... To really work correctly and reliably with Linux your cd writer needs to be seen as a SCSI device, so you need to use SCSI driver to detect/enable it.
If SCSI CD support is enable in your kernel (I mean not as module) you can detect your drive as SCSI device by adding "hdd=ide-scsi" as boot parameters (if the writer is seen as /dev/hdd when it's detected as IDE device)
If SCSI CD support is enable as module (that's a bit more complicated)... 2 possibilities:
1- IDE CD support is enable in your kernel... and I don't know how to help you unless you recompile your kernel

2- IDE CD support is enable as module, well you have to insert this module for your CD readers with the option: "ignore=/dev/hdd" to disable the detection of your writer as an IDE device... Then insert the SCSI modules (they are ide-scsi, sd_mod and sr_mod)
then retry your cdrecord command

Oliv'

Permaximus · 04-02-2005, 04:46 PM

Thanks. I now have two more questions:

How do I see if SCSI CD support is enable in my kernel?

And

How do I add "hdd=ide-scsi" as boot parameters?

Thanks a lot for the help, I really apprectiate it.

Oliv' · 04-03-2005, 07:56 AM

Quote:

How do I see if SCSI CD support is enable in my kernel?

2 solutions by testing it... I mean try to add the boot param, and see if you have this message in your logs at boot time:

Code:

hdd: attached ide-scsi driver.

or if you have a 2.6 kernel, I think you can see you kernel configuration (config file) in /proc...

Quote:

How do I add "hdd=ide-scsi" as boot parameters?

if you use lilo as bootloader, edit /etc/lilo.conf and add the following line (I'm not 100% as I don't use lilo):

Code:

append="hdd=ide-scsi"

then run "lilo" to enable changes
if you use grub, edit /boot/grub/menu.lst file, and append this to your "kernel" line and you can reboot

Oliv'