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Old 09-19-2005, 12:59 PM   #1
Eric3
LQ Newbie
 
Registered: Sep 2005
Distribution: Redhat
Posts: 16

Rep: Reputation: 0
Unhappy Linux doesn't recognize CD Burner as SCSI device


I am fairly new to Linux, although I have used a little bit I am now just starting to really get into it. I installed Redhat 8 in PIII 650 with 384 mb of Ram dual boot with Win 2000. The install went smoothly but after I installed I decided I wanted to add a CD burner to the machine since I had an open slot. It recognized the CD Rom but not that it's a burner.
I know that in order to burn a cd I need to turn on SCSI emulation for the CD roms. I have found several sites that deal with this and everything I try does not seem to make a difference.

I changed my fstab to look like this:
LABEL=/ / ext3 defaults 1 1
LABEL=/boot /boot ext3 defaults 1 2
none /dev/pts devpts gid=5,mode=620 0 0
none /proc proc defaults 0 0
none /dev/shm tmpfs defaults 0 0
/dev/hdb3 swap swap defaults 0 0
/dev/fd0 /mnt/floppy auto noauto,owner,kudzu 0 0
/dev/scd0 /mnt/cdrom iso9660 noauto,owner,kudzu,ro 0 0
/dev/scd1 /mnt/cdrom1 iso9660 noauto,owner,kudzu,ro 0 0
/dev/cdrom2 /mnt/cdrom2 iso9660 noauto,owner,kudzu,ro 0 0
/dev/cdrom3 /mnt/cdrom3 iso9660 noauto,owner,kudzu,ro 0 0

which didn't seem to make a difference.
My modules.conf looks like this.

alias parport_lowlevel parport_pc
alias eth0 eepro100
alias sound-slot-0 es1371
post-install sound-slot-0 /bin/aumix-minimal -f /etc/.aumixrc -L >/dev/null 2>&1 || :
pre-remove sound-slot-0 /bin/aumix-minimal -f /etc/.aumixrc -S >/dev/null 2>&1 || :
alias usb-controller usb-uhci
options ide-cd ignore="cdrom cdrom1"
alias scd0 sr_mod
alias scsi_hostadapter ide-scsi
alias scd1 sr_mod
alias scsi_hostadapter ide-scsi

and my grub.conf looks like this:
#boot=/dev/hda
default=1
timeout=10
splashimage=(hd1,0)/grub/splash.xpm.gz
title Red Hat Linux (2.4.18-14)
root (hd1,0)
append="cdrom=ide-scsi cdrom1=ide-scsi"
kernel /vmlinuz-2.4.18-14 ro root=LABEL=/
initrd /initrd-2.4.18-14.img
title DOS
rootnoverify (hd0,0)
chainloader +1

I have tried changing cdrom with hdc and cdrom1 with hdd and it didn't seem to make a difference. It doesn't recognize either cdrom as a scsi device.
Can someone help me with this? I would definately appreciate it.
Thanks
 
Old 09-19-2005, 04:18 PM   #2
BadSquishy
LQ Newbie
 
Registered: Sep 2005
Location: Grass Valley, CA
Distribution: Gentoo, SuSE
Posts: 1

Rep: Reputation: 0
This may or may not help.

I know on 2.6 kernels CD and DVD burners are no longer treated as scsi devices. I have successfully burnt CDs and DVDs using 2.6 kernels with Suse and Gentoo, the burners are accessed as ATAPI devices. See if Redhat 8 is using a 2.4 or 2.6 kernel. I recommend 2.6, everything just seems to work better.

Last edited by BadSquishy; 09-19-2005 at 04:19 PM.
 
Old 09-19-2005, 04:22 PM   #3
qwijibow
LQ Guru
 
Registered: Apr 2003
Location: nottingham england
Distribution: Gentoo
Posts: 2,672

Rep: Reputation: 47
run the following commands (the first as root) and post the output here.

Code:
cdrecord -scanbus

dmesg | grep [sS][cC][sS][iI]

lsmod

If at all possable, i would definatly recomend using a recent version of linux,
the 2.6 series kernel does not need SCSI emulation to use cd/dvd writers.
ALSO, if this is a driver issue, using a newer distro would probably fix that too.
 
Old 09-20-2005, 08:29 AM   #4
Eric3
LQ Newbie
 
Registered: Sep 2005
Distribution: Redhat
Posts: 16

Original Poster
Rep: Reputation: 0
Here is the out put of cdrecord -scanbus

Cdrecord 1.10 (i686-pc-linux-gnu) Copyright (C) 1995-2001 Jrg Schilling
Linux sg driver version: 3.1.24
Using libscg version 'schily-0.5'
scsibus0:
0,0,0 0) ' ' 'Scanner 600A4 ' '1.10' Scanner
0,1,0 1) *
0,2,0 2) *
0,3,0 3) *
0,4,0 4) *
0,5,0 5) *
0,6,0 6) *
0,7,0 7) *

Here is dmesg output

[root@pc003935 dev]# dmesg | grep [sS][cC][sS][iI]
SCSI subsystem driver Revision: 1.00
scsi0 : microtekX6
Type: Scanner ANSI SCSI revision: 02
scsi1 : SCSI host adapter emulation for IDE ATAPI devices
Type: CD-ROM ANSI SCSI revision: 02
Type: CD-ROM ANSI SCSI revision: 02
scsi : 1 host left.
scsi1 : SCSI host adapter emulation for IDE ATAPI devices
Type: CD-ROM ANSI SCSI revision: 02
Type: CD-ROM ANSI SCSI revision: 02
scsi : 1 host left.
Attached scsi generic sg0 at scsi0, channel 0, id 0, lun 0, type 6
scsi1 : SCSI host adapter emulation for IDE ATAPI devices
Type: CD-ROM ANSI SCSI revision: 02
Type: CD-ROM ANSI SCSI revision: 02
scsi : 1 host left.

Here is the lsmod output.

[root@pc003935 dev]# lsmod
Module Size Used by Not tainted
sg 36556 0 (autoclean)
es1371 30760 0 (autoclean)
ac97_codec 13384 0 (autoclean) [es1371]
gameport 3396 0 (autoclean) [es1371]
soundcore 6532 4 (autoclean) [es1371]
autofs 13348 0 (autoclean) (unused)
eepro100 22264 1
ipt_REJECT 3736 6 (autoclean)
iptable_filter 2412 1 (autoclean)
ip_tables 14936 2 [ipt_REJECT iptable_filter]
microtek 7584 0
scsi_mod 107176 2 [sg microtek]
mousedev 5524 1
keybdev 2976 0 (unused)
hid 22244 0 (unused)
input 5888 0 [mousedev keybdev hid]
usb-uhci 26188 0 (unused)
usbcore 77024 1 [microtek hid usb-uhci]
ext3 70368 2
jbd 52212 2 [ext3]

I wouldn't mind changing kernels, but I have to use the 2.4 kernel with Redhat 8 for testing something at work.
So if anyone could help me make this work I would appreciate it.
 
  


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