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Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?


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Old 05-16-2004, 03:41 AM   #1
Registered: Jul 2003
Posts: 363

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RH9 &9.0 Benq CDRW 4012a IDE + IDE CDROM - Install - how to

A hardware installation issue :

Red Hat 9 (want to do this under Red Hat 8.0 as well)
Macnind config
HDA Hard disk
HDC IDE Benq 4012a CDRW (master secondary IDE)
HDD IDE CDROM 36x Diamond (slave secondary IDE)

RH 9 thinks the CDRW is an ide CDROM called 40x12x
Both drives read CDs ok

How do I insall the CDRW ?
I have looked at

I understand that the IDE CDRW has to emulate a SCSI device inorder to work.
But after looking atht above documetns Im still completely lost.

Would someone specify a dumbed down step by step procedure
to help me get the CDROM and CDRW to work and co-exist ?


Old 05-16-2004, 04:14 AM   #2
Registered: Apr 2004
Distribution: Gentoo ~x86
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my cdrw works fine without scsi-emulation, but xcdroast keeps on telling me to use it.
however, mine show up as:
hdb: ATAPI 40X DVD-ROM drive, 512kB Cache, UDMA(33)
Uniform CD-ROM driver Revision: 3.20
hdc: ATAPI 52X CD-ROM CD-R/RW CD-MRW drive, 2048kB Cache, UDMA(33)
hdd: ATAPI 24X DVD-ROM DVD-R CD-R/RW drive, 2000kB Cache, UDMA(33)
in dmesg, so that might be why mine work and yours doesnt.

i think that all you need to do for scsi emulation is to enable it in your kernel configuration , and start your kernel with "hdc=ide-scsi". in lilo, you add the line append="hdc=ide-scsi" i think.

what happens if you try to write a cd when it thinks its not a cdrw drive?
Old 05-18-2004, 01:37 AM   #3
Registered: Jul 2003
Posts: 363

Original Poster
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I ran dmesg in a terminal session

hdc: ATAPI 48x CD-ROM CD-R/RW drive, 2048kB Cache, DMA
Uniform CD-ROM driver Revision 3.12
hdd: ATAPI 36x CD-ROM drive, 128kB Cache DDMA(33)
cdrom: This disc doesnt have any tacks that I recognise ! <--- ****** Any idea what this means ?
udf registering file system
cdrom open failed
cdrom open failed
UDF-fs: No VRS found <----
SCSI subsystem driver Revision: 1.00
modprobe: Cant Locate modile char-major-97 <----

So it knows that the CRDRW is there.
When I access Gnome System Tools/ More system tootls / CD writer
(aka GnomeToaster 1.0 Beta 8)
FIle / change recorder
There are no CD RW devices to select.
When I select burn all it will allow is the creation of a CD file image on the hard disk.

I can see that the Iniform CD-ROM driver Revision differs from yous.

What do you make of the error messsages (marked)

Both drives read CDs ok as far as I can tell.

You think that I should update /etc/lilo.conf.anaconda.conff ?

Old 05-18-2004, 03:23 AM   #4
Registered: Jul 2003
Posts: 363

Original Poster
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Checked out
A great document !

Im using grub loader

edited /boot/grub/brub.conf
Appended to end of kernel line (after /) hdc=ide-scsi

Re-booted the machine

In a terminal session

cd-record -scanbus
Can now see CDRW drive identified as as a SCSI type device

Ran GnomeToaster
Selected the drive in preferences

Ran a trial cd burn and the thing actually works !!!!!

The hdd cd-rom works ok.

New question
system log error messages - see previous my posting

CD record is version 2.0
when i execute cd-record -scanbus
and burn using GnomeToaster
I get a warning message :

cdrecord Warning using inofficial libscg transport code version (schily - Red Hat-scsi-linux-sg.c-1.75-RH (#)scs-=linu-sg.c 1.75 02/10/21 Copyright 1997 J. Schilling)

What is all this abont ???

Old 05-18-2004, 03:50 AM   #5
Registered: Jul 2003
Posts: 363

Original Poster
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Additional Question

I used GnomeToaster to create a multisession CD
It shows Datatracks #1 #2 #3 #4
Butnwhen I mount the CD all I can see are the files from Datatrack #1
The CD RW and my CDROM drive are both definitely multisession compatible.

Any ideas ?
Old 05-30-2004, 07:41 AM   #6
Registered: Jul 2003
Posts: 363

Original Poster
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Hi !

This question is still plagueing me.
No matter how I try gnomeToaster will not
create a multisession CD !

Im running the current version of CDRECORD
and gnomeToaster.

Help !!!
Old 05-30-2004, 02:43 PM   #7
Registered: Apr 2004
Distribution: Gentoo ~x86
Posts: 407

Rep: Reputation: 30
which kernel are you using - try upgrading to 2.6.x. i think if u do that then you wont need scsi emulation, and it might fix ur other problem


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