Hello Geoff-- I'm kind of a newbie at Linux, but my cdrecorder does work so I thought I would compare notes with you in hopes it may help. On Wednesday 15 May 2002 22:27, Geoffrey Snyder wrote:
I'm trying to install a new plextor cd burner (Plexwriter 16/10/40A CD-RW) on my SuSE 8.0 system. I've followed the instructions in the support database but haven't had success. The instructions - briefly outlined - are:
Switch off IDE support by changing the LILO configuration - add hda=ide-scsi to the append option of the boot loader (hda is the correct drive for my cd)
I have a CD-burner as second drive on my second IDE bus, so it is: /dev/hdd After enabling ide-scsi emulation (as a kernel boot-time parameter), /dev/hdd becomes /dev/sr0 on my system (SuSE 8.0) ide-scsi emulation is enabled by changing the /etc/lilo.conf file to include: append = " hdd=ide-scsi" (Note that there is a space after the opening quotation mark. I believe this may be to ensure that when the kernel parameter is appended to the boot-time arguments, there will be a space between any previous parameter and this one. Remember to execute /sbin/lilo after editing /etc/lilo.conf so that lilo will read the new lilo.conf and write the appropriate data to its boot-up file on the Master Boot Record (or wherever it is installed).) Here is my complete /etc/lilo.conf file: boot = /dev/hda change-rules reset read-only menu-scheme = Wg:kw:Wg:Wg lba32 prompt timeout = 80 message = /boot/message image = /boot/vmlinuz label = linux root = /dev/hda2 vga = 791 initrd = /boot/initrd append = " hdd=ide-scsi" image = /boot/vmlinuz.suse label = failsafe root = /dev/hda2 vga = 791 initrd = /boot/initrd.suse append = "ide=nodma apm=off acpi=off hdd=ide-scsi" optional image = /boot/memtest.bin label = memtest86
Load the scsi emulation by adding this line: /sbin/modprobe ide-scsi to the /etc/init.d/boot.local file.
I didn't have to do the step above. I'm not sure why. I think it may be because ide-scsi emulation was either already compiled into the kernel I use, or the kernel was already configured to load the scsi emulation module(s) if and when needed (and the boot-time parameter hdd=ide-scsi in lilo.conf implies the need for the module, so the kernel loads it I suppose). Here are the pertinent lines from boot-up, obtained with /bin/dmesg hdd: no flushcache support scsi0 : SCSI host adapter emulation for IDE ATAPI devices Vendor: MITSUMI Model: CR-4804TE Rev: 2.8C Type: CD-ROM ANSI SCSI revision: 02 Attached scsi CD-ROM sr0 at scsi0, channel 0, id 0, lun 0 sr0: scsi3-mmc drive: 24x/24x writer cd/rw xa/form2 cdda tray
Correct settings for all IDE CD drives: ln -sf /dev/scd0 /dev/cdrecorder I've also tried: ln -sf /dev/sr0 /dev/cdrecorder per suggestion from suse support
The second symbolic link is what I have on my system, a link called /dev/cdrecorder that points to /dev/sr0 (which in turn is the device file assigned by scsi emulation to /dev/hdd, now that it is being treated as a scsi device)
Add this line to fstab: /dev/cdrecord /media/cdrecorder auto ro,noauto,user,exec 0 0
That is almost what I have in my /etc/fstab, except that if the symbolic link to /dev/sr0 is /dev/cdrecorder, then the line in /etc/fstab should begin /dev/cdrecorder (not /dev/cdrecord). Everything else in the pertinent line in my /etc/fstab is identical to yours.
mkdir /media/cdrecorder
Here is the output of ls -l for /media on my system: linux# cd /media; ls -l total 20 drwxr-xr-x 5 root root 4096 Apr 29 21:26 . drwxr-xr-x 20 root root 4096 May 16 06:45 .. drwxr-xr-x 2 root root 4096 Apr 29 21:26 cdrecorder drwxr-xr-x 2 root root 4096 Mar 20 17:14 cdrom drwxr-xr-x 2 root root 4096 Mar 20 17:14 floppy
Reboot and the thing should work but when I run cdrecord -scanbus this is all I get:
Cdrecord 1.11a13 (i686-suse-linux) Copyright (C) 1995-2001 Jörg Schilling Linux sg driver version: 3.1.22 Using libscg version 'schily-0.5' scsibus0: 0,0,0 0) * 0,1,0 1) * 0,2,0 2) * 0,3,0 3) * 0,4,0 4) 'iomega ' 'jaz 2GB ' 'E.17' Removable Disk 0,5,0 5) * 0,6,0 6) * 0,7,0 7) *
which lists my real scsi drive (just the iomega) that are on my scsi adapter - nothing about the ide cd-rw.
Here is the output of cdrecord -scanbus on my system: linux:/media # cdrecord -scanbus Cdrecord 1.11a19 (i686-suse-linux) Copyright (C) 1995-2002 Jörg Schilling Linux sg driver version: 3.1.22 Using libscg version 'schily-0.6' scsibus0: 0,0,0 0) 'MITSUMI ' 'CR-4804TE ' '2.8C' Removable CD-ROM 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) * So cdrecord does correctly see my Atapi Mitsumi CD burner as a SCSI device. On my system I don't have a real SCSI adapter, as you do for your Iomega Jaz drive so I don't know about any possible interactions between a real SCSI bus and ide-scsi emulation. (Side note: I don't have a Jaz drive anymore after my Jaz drive became defective, caused read-write errors on my Jaz disks and ended up using all the spare blocks or sectors on the disks thinking that the read-write errors were caused by bad blocks. This all happened automatically within the space of several minutes after inserting the disks into the Jaz drive and trying to use them for back-up. When the disks had no more spare blocks, the Jaz drive refused to use them, giving an error message that my recently purchased disks had reached the end of their lifespan and could not be used, or something to that effect. I wrote numerous email messages to Iomega, who said that the problem lay in the drive, not the disks, but that unfortunately the disks (and all my backed-up data on them) could no longer be used. They offered to sell me a refurbished Jaz drive for $150 but I had lost five expensive 2GB Jaz disks that I had only had for several months as a result of this. The disks would not be able to be reinitialized in the refurbished drive and reused. I turned my back on Iomega at that point and no longer use their products, although the Zip drives seem reliable.) Good luck, Steve D New Mexico, US