CDR burner not being recognized by K3B setup

cwwilson721 · 04-14-2006, 12:27 AM

The title says it all. "Could not find an additional device at
/dev/hdd" I've tried /dev/hdd , /dev/cdrom2 /dev/cdrw2. (I've added the cdrw1 and cdrw2 devices in /dev). Both cdrom are cdrw's, tried cdrw1, hdc, etc. Always the same... It usually is mounted at /cdrom1 or /cdrom2 (/dev/hdc /dev/hdd). cd read fine. The mepis livecd I have finds/burns with no problem.

Running Slack 10.2, not current, KDE, kernel 2.4.31

***Update***

cd1 & cd2 is now reading/mounting cdroms when booted from mepis livecd, but wiil not mount/read in Slackware.

cwwilson721 · 04-14-2006, 02:06 AM

Cleaned CDROM, now can boot Mepis LiveCD, and mount/read from Mepis. But when I boot Slackware, it refuses to mount either cd1 or cd2, saying neither are valid block devices.

Any ideas?

Bruce Hill · 04-14-2006, 02:09 AM

Please post the output of "dmesg | grep -i atapi" and "cat /etc/fstab" and "mount" and let us take a look see.

cwwilson721 · 04-14-2006, 02:17 AM

Code:

# dmesg | grep -i atapi
hdc: LITE-ON COMBO SOHC-4832K, ATAPI CD/DVD-ROM drive
hdd: PHILIPS CDRW2412A, ATAPI CD/DVD-ROM drive

Code:

# cat /etc/fstab
/dev/hdb4        swap             swap        defaults         0   0
/dev/hdb1        /                reiserfs    defaults         1   1
/dev/hdb2        /root            reiserfs    defaults         1   2
/dev/hdb3        /home            reiserfs    defaults         1   2
/dev/hda1        /winxp           ntfs        ro               1   0
/dev/hdc         /cdrom1          auto        defaults         1   2
/dev/hdd         /cdrom2          auto        defaults         1   2
/dev/sda1        /usbkey          auto        defaults         1   2
/dev/fd0         /mnt/floppy      auto        noauto,owner     0   0
devpts           /dev/pts         devpts      gid=5,mode=620   0   0
proc             /proc            proc        defaults         0   0

And

Code:

# mount
/dev/hdb1 on / type reiserfs (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
/dev/hdb2 on /root type reiserfs (rw)
/dev/hdb3 on /home type reiserfs (rw)
/dev/hda1 on /winxp type ntfs (ro)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
usbfs on /proc/bus/usb type usbfs (rw)

UPDATE****
Changed fstab to "auto,users" on both devices, no help. Also deleted the cdrw devices I added in /dev, still will not mount cdroms.
"dev /dev/hdx not a valid block device"

Bruce Hill · 04-14-2006, 02:27 AM

I would put back the one Slackware setup originally:

Code:

/dev/cdrom       /mnt/cdrom       auto        noauto,owner,ro  0   0

Try adding these also:

Code:

/dev/hdc         /cdrom1            auto        noauto,users,ro  0   0
/dev/hdd         /cdrom2            auto        noauto,users,ro  0   0

You can read "man fstab" and "man mount" if you're wondering why. Sorry to be brief, bbl.

cwwilson721 · 04-14-2006, 02:55 AM

Still gives me "Not a valid block device"

rkrishna · 04-14-2006, 08:33 AM

try ejecting from root, /dev/hdd and hdc by "eject /dev/hdd" and see wether it is working or not (simple check), your dmesg output shows they are the devices

if this is working (from root) then ok, now the problem is mounting and reading data cds.

this is one guessing....

have u done the scsi emulation(by appending lilo), "YUO WIL HAVE PROBLEM WITH READING CDS" if so ur devices may be "/dev/scd0 and /dev/scd1" if so u have to make a link, "

Code:

ln -sf /dev/scd0 /dev/cdrom

and in fstab make it like "/dev/cdrom /mnt/cdrom (or /cdrom as you do) noauto,users,ro 0 0"

make sure that you have a /cdrom in "root /" folder

cwwilson721 · 04-14-2006, 01:55 PM

Won't mount, won't eject, won't do anything in Slackware. Will mount, will eject, will burn in Mepis. Not scsi devices, nor any append in my lilo.conf

rkrishna · 04-14-2006, 02:23 PM

hope nothing to do with filesystem but even...

are you using reiserfs??? frankly speaking i had some problem with slack 10.2 (10.1 was good) reiserfs always caused unusual errors, (may be with my cds i dont know) sorry that i couldn't help
regards

cwwilson721 · 04-14-2006, 06:30 PM

Yes, I am running reiserfs.

But how could that affect cd mounting?

Bruce Hill · 04-14-2006, 06:40 PM

Doesn't effect it at all, as CD/VCD/DVDs don't use reiserfs, nor does your ROM drive. Have you read /var/log/messages to see what your error messages are?

Franklin · 04-14-2006, 06:55 PM

with 2.4 kernels you need to be running scsi emulation. (default is "on" in slack - see /etc/rc.d/rc.modules)

This also requires an append line in lilo.conf as such:

Code:

# Linux bootable partition config begins
image = /boot/vmlinuz-ide-2.4.32
  append="hdc=ide-scsi"
  root = /dev/hda7
  label = Slackware-1
  read-only
# Linux bootable partition config ends

You can put the append line at the beginning of lilo.conf as well, but I have 2.6 kernels that boot from lilo and to put it there would bork them.

In such a system, /dev/cdrom or /dev/cdwriter needs to be a symlink to /dev/sr0, or /dev/sr0 needs to be the entry in fstab (or both):

Code:

steve@peggyo:/dev$ ls -la cdrom
lrwxrwxrwx 1 root root 8 2005-09-26 22:51 cdrom -> /dev/sr0
steve@peggyo:/dev$

Code:

/dev/hda8          /mnt/slackware   reiserfs    noauto,user      0   0
/dev/hda9          /mnt/debian      reiserfs    noauto,user      0   0
/dev/hda10         /mnt/data-1      reiserfs    noauto,user      0   0
/dev/hda11         /home            reiserfs    defaults         1   2
/dev/hda12         swap             swap        defaults         0   0
/dev/hdb4          /mnt/zip         vfat        noauto,user      1   0
/dev/sr0           /mnt/cdrom       auto        noauto,user,ro   0   0  <--- LOOK
/dev/fd0           /mnt/floppy      auto        noauto,owner     0   0
devpts             /dev/pts         devpts      gid=5,mode=620   0   0
proc               /proc            proc        defaults         0   0
bertha:/data       /mnt/data-n      nfs         auto,user        0   0

This is what works for me in my slack-current-2.4 box.

HTH

Bruce Hill · 04-14-2006, 06:59 PM

You do not need SCSI emulation for ATAPI drives in Slackware 10.2 with kernel 2.4.31. Not true, and I have quite a few systems I've built with which to prove that.

cwwilson721 · 04-14-2006, 07:01 PM

Thanks for the info, I'll try it later. But the basic issue remains: I cannot mount/read any cd device. I'm not so much worried at the moment about writing, I'll hop on that after I can get them to mount like normal.

Franklin · 04-14-2006, 07:26 PM

Quote:

Originally Posted by Chinaman

You do not need SCSI emulation for ATAPI drives in Slackware 10.2 with kernel 2.4.31. Not true, and I have quite a few systems I've built with which to prove that.

Well, I have no reason to dispute that, yet I am happily burning CD's as we speak using the exact set-up I describe. In other in stalls, I have found that burning did NOT work without doing what I have described.

As the OP is interested in being able to burn CD's in slackware using a 2.4 kernel and I can do exactly that doing exactly what I described, I see no issue offering it as a solution.

Forgive me for getting your panties in a bunch.