On Thu, Jan 23, 2003 at 04:07:41PM -0200, Marcelo Chiapparini wrote: > Hi! > > In spite of a couple of suggestions, I am still trying to put my > cdwriter to work :( > First of all, make sure that the scsi support is loaded. The output for > the dmesg command is: > > nostromo:/home/chiappa# dmesg |grep scsi > Kernel command line: auto BOOT_IMAGE=linux ro root=306 hdc=ide-scsi > hdd=ide-scsi max_scsi_luns=1 > ide_setup: hdc=ide-scsi > ide_setup: hdd=ide-scsi > scsi0 : SCSI host adapter emulation for IDE ATAPI devices > Attached scsi CD-ROM sr0 at scsi0, channel 0, id 0, lun 0 > Attached scsi CD-ROM sr1 at scsi0, channel 0, id 1, lun 0 > sr0: scsi3-mmc drive: 0x/56x cd/rw xa/form2 cdda tray > sr1: scsi3-mmc drive: 24x/32x writer cd/rw xa/form2 cdda tray > > remember that my problem is this message: > > nostromo:/home/chiappa# cdrecord -scanbus > Cdrecord 1.10 (i686-pc-linux-gnu) Copyright (C) 1995-2001 J?rg Schilling > cdrecord: No such file or directory. Cannot open SCSI driver. > > > Now, after surfed google a little, I am wonder if I have a problem with > the /dev/sg0 device. The MAKEDEV manual says that /dev/sg* are used to > speak to scsi devices, so... > > In a potato system, which runs cdrecord OK, I have the following output > to the command "cdrecord -scsnbus /dev/sg0" > > dft:/home/chiappa# cdrecord -scanbus /dev/sg0 > cdrecord: No tracks allowed with this option > cdrecord: Usage: cdrecord [options] track1...trackn > > the command is wrong, but the output proves that cdrecord does interact > with the /dev/sg0 device in some way.
Try just 'cdrecord -scanbus' on its own. You'll get some useful output then. It'll tell you the SCSI ID numbers you need for cdrecord's -Dm,n syntax for referring to CD drives. > In my woody, kernel 2.4.18, system I get for the same command: > > nostromo:/home/chiappa# cdrecord -scanbus /dev/sg0 > cdrecord: No such device. Cannot open '/dev/sg0'. > > cdrecord says that the device doesn exist... but actually, this device > does exist: > > nostromo:/home/chiappa# ls -l /dev/sg0 > crw------- 1 root root 21, 0 Jun 13 2001 /dev/sg0 > > So, I have two questions: > > a) does cdrecord use the /dev/sg* devices? > b) why cdrecord can see this device in my system? > > Thanks in advance for any help! What permissions does /dev/sg0 have in your potato system? Try setting the woody ones the same as the potato ones. Or try (as root) addgroup cdburners adduser your_user_name cdburners chgrp cdburners /dev/sg0 chmod g+rw /dev/sg0 (also for /dev/sg1 - seems that's a CD writer as well) cdrecord does AFAIK use the /dev/sg* devices but it doesn't call them that. Instead, you use the option -Dm,n where m, n are SCSI ID/LUN numbers for your CD-writer, which you get by running cdrecord -scanbus; the figures in the second and third columns are the ones you want. Pigeon -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
