special device /dev/scd0 does not exist

[rondelli]

Hey there!
I`m facing a huge problem here guys.
I`ve installed ubuntu 9.10 on my laptop, I`ve created a partition with gpart and now have an exceptional dual boot with xp sp2. Why? Because I`m a developer and if I browse the linux community there aren`t sufficient tools that match the windows ones, but this isn`t the point here.

My cd dosen`t mount. I really love to learn linux but sorry guys I really need my cdrom.

K here`s what I`ve done, and yes I have thoroughly browsed the forum for simmilar topics.


1) if I try: sudo mount -t iso9660 /dev/hda /media/cdrom0
it outputs to:
mount: special device /dev/hda does not exist;
the same if I try with /dev/scd0;
2)if I try to use: lshal | grep CD:
The ordinateur dosen`t find the device.
3)If I try to use: sudo gedit /etc/fstab:
I have the line: /dev/scd0 /media/cdrom0 udf,iso9660 user,noauto,exec,utf8 0 0
I have tried commenting out the line booting and rebooting;
4)If I use lsusb:

BUS 003 Device 001: ID 1d6b: 0001 Linux foundation 1.1 root hub
BUS 002 Device 001: ID 1d6b: 0001 Linux foundation 1.1 root hub
BUS 005 Device 001: ID 1d6b: 0001 Linux foundation 1.1 root hub
BUS 001 Device 002: ID 0c45: 62c0 Microdia Sonix USB 2.0 Camera
BUS 001 Device 001: ID 1d6b: 0002 Linux foundation 2.0 root hub
BUS 004 Device 001: ID 1d6b: 0001 Linux foundation 1.1 root hub

care to mention that my dvdrom is not an external drive

5)if I boot with the Live CD it works, If I boot with any other cd, format same message, also it is available in win xp.

6)I have tried to open the /boot/grub/menu.lst --> I couldn`t find any file with the name menu.lst
also used the command: ls /boot/grub/ | grep menu
I tried to open this file so I could add the noapic option at the end of the line
kernel /boot/vmlinuz-2.6.15-27-386 root=/dev/sda3 ro quiet splash

7)I have tried to replace the line /dev/scd0 in /etc/fstab with: hdc and with hda
Dosen`t work.

8)cdrecord --scanbus outputs:
wodim: No such file or directory;
Cannot open SCSI driver!;

9)running : ls -al /media
OUTPUTS:

drwxr -xr - x 3 root root 4096 2099-11-16 02:42
drwxr -xr - x 21 root root 4096 2009-11-16 02:20
lrwxrwxrwx 1 root root 6 2009-11-16 01:53 cdrom -> cdrom0
drwxr -xr - x 2 root root 4096 2009-11-16 01:53 cdrom0

10)my primary HDD is /dev/sda

11)In my media directory there is a cdrom0 subdirectory

12)later edit: sudo gedit /etc/fstab
edited the line "udf, iso9660" with auto: same message

Please HELP

[fahadsadah]

It works in the LiveCD?

If so, please post the output of

sudo mount

[falconindy]

You're looking in the wrong places. Check the output of:

sudo lshw -c disk

The liveCD will load a more robust set of kernel modules. It's possible that a different module is claiming your drive on your install and thus naming it differently than what you expect. I encountered this on my Arch install when I was paring down my boot image.

Semi-unrelated: What tools are you using on Windows that you find aren't matched on Linux? No offense, but I suspect you haven't looked hard enough.

[rondelli]

It works in the LiveCD?

If so, please post the output of

sudo mount

/dev/sda2 on / type ext3 (rw,errors=remount-ro)
proc on /proc type proc (rw)
none on /sys type sysfs (rw,noexec,nosuid,nodev)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
udev on /dev type tmpfs (rw,mode=0755)
none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
none on /dev/shm type tmpfs (rw,nosuid,nodev)
none on /var/run type tmpfs (rw,nosuid,mode=0755)
none on /var/lock type tmpfs (rw,noexec,nosuid,nodev)
none on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
gvfs-fuse-daemon on /home/gabriel/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=gabriel)
/dev/sdb1 on /media/C863-99B2 type vfat (rw,nosuid,nodev,uhelper=devkit,uid=1000,gid=1000, shortname=mixed,dmask=0077,utf8=1,flush)

You're looking in the wrong places. Check the output of:
Code:
sudo lshw -c disk
The liveCD will load a more robust set of kernel modules. It's possible that a different module is claiming your drive on your install and thus naming it differently than what you expect. I encountered this on my Arch install when I was paring down my boot image.

Semi-unrelated: What tools are you using on Windows that you find aren't matched on Linux? No offense, but I suspect you haven't looked hard enough.

*-disk
description: ATA Disk
product: FUJITSU MHW2080B
vendor: Fujitsu
physical id: 0.0.0
bus info: scsi@0:0.0.0
logical name: /dev/sda
version: 0000
serial: K101T7A2ES9L
size: 74GiB (80GB)
capabilities: partitioned partitioned:dos
configuration: ansiversion=5 signature=052a0529


Unrelated: Let`s say Adobe Dreamweaver CS3.

[rondelli]

So anyone with ideas on how to fix this?
I found that there are numerous others that share my situation so there must be an official answer or something of the sorts.
Come on guys!!! It`s the 9.10 release of a well-known Linux system for beginners.

[rondelli]

Ok so I found a partial solution
If I boot with the option noapic acpi=off, it even starts with the cd drive on the desktop.
I tried editing under root with
sudo gedit /boot/ggrub/grub.cfg
to add at the end of the line noapic acpi=off, but i still get an error message that the disk is read only so I can`t save the file at it`s current location.
Any ideas on how to solve this?

[falconindy]

*-disk
description: ATA Disk
product: FUJITSU MHW2080B
vendor: Fujitsu
physical id: 0.0.0
bus info: scsi@0:0.0.0
logical name: /dev/sda
version: 0000
serial: K101T7A2ES9L
size: 74GiB (80GB)
capabilities: partitioned partitioned:dos
configuration: ansiversion=5 signature=052a0529

Unless you've skipped a section of the output, lshw says you don't have a dvd drive.

Ok so I found a partial solution
If I boot with the option noapic acpi=off, it even starts with the cd drive on the desktop.

Hrm, that seems like a bad tradeoff just to get cd-rom access.

I tried editing under root with
sudo gedit /boot/ggrub/grub.cfg
to add at the end of the line noapic acpi=off, but i still get an error message that the disk is read only so I can`t save the file at it`s current location.
Any ideas on how to solve this?

grub.cfg isn't meant to be directly edited, thanks to Canonical's suite of maintenance scripts. If you do `ls -l /boot/grub/grub.cfg` you'll see its "-r---------". You'll need to edit the appropriate header file under /etc/grub.d/ and then re-run update-grub.

Post the output of `lsmod` and `lshw -c disk` when your cd rom shows up.

[rondelli]

to lsmod

Module Size Used by
nls_iso8859_1 3740 1
nls_cp437 5372 1
vfat 10716 1
fat 51452 1 vfat
usb_storage 52544 1
isofs 31620 1
joydev 10272 0
uvcvideo 59080 0
binfmt_misc 8356 1
videodev 36736 1 uvcvideo
v4l1_compat 14496 2 uvcvideo,videodev
psmouse 56180 0
serio_raw 5280 0
ppdev 6688 0
snd_hda_codec_si3054 4636 1
snd_hda_codec_realtek 203328 1
snd_hda_intel 26920 2
snd_hda_codec 75708 3 snd_hda_codec_si3054,snd_hda_codec_realtek,snd_hda _intel
snd_hwdep 7200 1 snd_hda_codec
snd_pcm_oss 37920 0
snd_mixer_oss 16028 1 snd_pcm_oss
snd_pcm 75296 4 snd_hda_codec_si3054,snd_hda_intel,snd_hda_codec,s nd_pcm_oss
snd_seq_dummy 2656 0
arc4 1660 2
ecb 2524 2
iwl3945 77212 0
snd_seq_oss 28576 0
snd_seq_midi 6432 0
pcmcia 36808 0
iwlcore 112508 1 iwl3945
snd_rawmidi 22208 1 snd_seq_midi
snd_seq_midi_event 6940 2 snd_seq_oss,snd_seq_midi
mac80211 181236 2 iwl3945,iwlcore
snd_seq 50224 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_mid i_event
snd_timer 22276 2 snd_pcm,snd_seq
snd_seq_device 6920 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi ,snd_seq
led_class 4096 2 iwl3945,iwlcore
lp 8964 0
snd 59204 17 snd_hda_codec_si3054,snd_hda_codec_realtek,snd_hda _intel,snd_hda_codec,snd_hwdep,snd_pcm_oss,snd_mix er_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd _timer,snd_seq_device
yenta_socket 24200 1
soundcore 7264 1 snd
parport 35340 2 ppdev,lp
rsrc_nonstatic 11644 1 yenta_socket
tifm_7xx1 5372 0
snd_page_alloc 9156 2 snd_hda_intel,snd_pcm
cfg80211 93052 3 iwl3945,iwlcore,mac80211
pcmcia_core 35792 3 pcmcia,yenta_socket,rsrc_nonstatic
tifm_core 7832 1 tifm_7xx1
iptable_filter 3100 0
ip_tables 11692 1 iptable_filter
x_tables 16544 1 ip_tables
ohci1394 29900 0
ieee1394 86596 1 ohci1394
r8169 32064 0
mii 5212 1 r8169
intel_agp 27484 0
agpgart 34988 1 intel_agp


to lshw -c disk

*-disk
description: ATA Disk
product: FUJITSU MHW2080B
vendor: Fujitsu
physical id: 0.0.0
bus info: scsi@0:0.0.0
logical name: /dev/sda
version: 0000
serial: K101T7A2ES9L
size: 74GiB (80GB)
capabilities: partitioned partitioned:dos
configuration: ansiversion=5 signature=052a0529
*-cdrom
description: DVD-RAM writer
product: CDDVDW SN-S082H
vendor: TSSTcorp
physical id: 0.1.0
bus info: scsi@1:0.1.0
logical name: /dev/cdrom
logical name: /dev/cdrw
logical name: /dev/dvd
logical name: /dev/dvdrw
logical name: /dev/scd0
logical name: /dev/sr0
logical name: /media/cdrom0
version: SB00
capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
configuration: ansiversion=5 mount.fstype=iso9660 mount.options=ro,nosuid,nodev,relatime,utf8 state=mounted status=ready
*-medium
physical id: 0
logical name: /dev/cdrom
logical name: /media/cdrom0
configuration: mount.fstype=iso9660 mount.options=ro,nosuid,nodev,relatime,utf8 state=mounted
*-disk
description: SCSI Disk
physical id: 0.0.0
bus info: scsi@2:0.0.0
logical name: /dev/sdb
size: 124MiB (130MB)
capabilities: partitioned partitioned:dos
configuration: signature=42116736

grub.cfg isn't meant to be directly edited, thanks to Canonical's suite of maintenance scripts.

The headers in /etc/grub.d are just too complicated for poor lil me so instead of using sudo gedit I used sudo nano /boot/grub/grub.cfg and WORKED
Why do you say it`s a bad tradeoff? If you can help me I will remain in your debt .

[falconindy]

Ok, sweet. Good news, bad news, and semi-unrelated news.

Semi-unrelated: Ubuntu doesn't have access to some modules I assumed it does.

Good news: acpi=off isn't as bad as I thought it was and I think it should suffice.

Bad news: I'm going to make you edit the files in /etc/grub.d. If you don't, you'll end up having to edit grub.cfg every time update-grub is run, and you don't want to have to do that. Better to just make the change permanent. Open "/etc/grub.d/10_linux" and find the function linux_entry() -- it should be around line 56. About 15 lines below that, you'll see a line that looks like this:

    linux   ${rel_dirname}/${basename} root=${linux_root_device_thisversion}     ro $2

Add your options to the end of that line, save it, and run `sudo update-grub`. Now, when you go into /boot/grub/grub.cfg, you should see your options tacked onto to boot entry for Karmic.

[rondelli]

Ok, sweet. Good news, bad news, and semi-unrelated news.


Bad news: I'm going to make you edit the files in /etc/grub.d. If you don't, you'll end up having to edit grub.cfg every time update-grub is run, and you don't want to have to do that. Better to just make the change permanent. Open "/etc/grub.d/10_linux" and find the function linux_entry() -- it should be around line 56. About 15 lines below that, you'll see a line that looks like this:

    linux   ${rel_dirname}/${basename} root=${linux_root_device_thisversion}     ro $2

Add your options to the end of that line, save it, and run `sudo update-grub`. Now, when you go into /boot/grub/grub.cfg, you should see your options tacked onto to boot entry for Karmic.

Good...goood I like editing code. The thing is I saw that line when I skimmed 10_linux, but didn`t want to change something without being absolutely certain. Thanks a mile! So please explain in layman terms what this acpi option does, in case I decide to abandon the cd option in favour of a USB one.
How will acpi=off will affect me on the long run?

If you`ll answer that I`ll promise to send you a home-made Ubuntu blend coffee