LinuxQuestions.org
Download your favorite Linux distribution at LQ ISO.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Software
User Name
Password
Linux - Software This forum is for Software issues.
Having a problem installing a new program? Want to know which application is best for the job? Post your question in this forum.

Notices


Reply
  Search this Thread
Old 03-01-2015, 09:05 PM   #1
beckwith
Member
 
Registered: Nov 2002
Location: Western Australia
Distribution: Mint / ubuntu
Posts: 118

Rep: Reputation: 15
optical drive problem


I'm assuming that this is not hardware... the optical drive
will play CDs with VLC, but won't mount data CDs
Quote:
root@palantir:/home/beckwith# mount /dev/sr0 /media/cdrom0
mount: block device /dev/sr0 is write-protected, mounting read-only
NTFS signature is missing.
Failed to mount '/dev/sr0': Invalid argument
The device '/dev/sr0' doesn't seem to have a valid NTFS.
Maybe the wrong device is used? Or the whole disk instead of a
partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?
The disk is data CD burned with K3B on my laptop (Debian 7.8.0),
but won't automount, nor manually mount. As quoted above
NTFS has nothing to do with the disk as fas I know,
 
Old 03-01-2015, 09:20 PM   #2
smallpond
Senior Member
 
Registered: Feb 2011
Location: Massachusetts, USA
Distribution: Fedora
Posts: 4,180

Rep: Reputation: 1272Reputation: 1272Reputation: 1272Reputation: 1272Reputation: 1272Reputation: 1272Reputation: 1272Reputation: 1272Reputation: 1272
Try:
Code:
mount -t iso9660 /dev/sr0 /media/cdrom0
 
Old 03-01-2015, 09:31 PM   #3
beckwith
Member
 
Registered: Nov 2002
Location: Western Australia
Distribution: Mint / ubuntu
Posts: 118

Original Poster
Rep: Reputation: 15
Still no-go, works on laptop, not on desktop
Quote:
root@palantir:/home/beckwith/bin# mount -t iso9660 /dev/sr0 /media/cdrom0
mount: block device /dev/sr0 is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/sr0,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
 
Old 03-02-2015, 12:58 PM   #4
business_kid
LQ Guru
 
Registered: Jan 2006
Location: Ireland
Distribution: Slackware, Slarm64 & Android
Posts: 16,655

Rep: Reputation: 2406Reputation: 2406Reputation: 2406Reputation: 2406Reputation: 2406Reputation: 2406Reputation: 2406Reputation: 2406Reputation: 2406Reputation: 2406Reputation: 2406
looks like your desktop is missing iso9660 kernel module. Try
lsmod |grep iso9660

There are also optical type problems which explain your symptoms. Does it read a pressed cd (as opposed to a cdr?). There are three very fine adjustments that control reading. In the hardware, they are set using special equipment by potentiometers and sealed with wax, or thick paint. Values drift over time, and the thing slowly alters it's reading. Not reading CDRs(especially lousy quality CDRs) is the first sign of optical degradation.
 
Old 03-03-2015, 12:53 AM   #5
beckwith
Member
 
Registered: Nov 2002
Location: Western Australia
Distribution: Mint / ubuntu
Posts: 118

Original Poster
Rep: Reputation: 15
three things.
Degradation is unlikely - the PC is only 6 months old.

lsmod|grep iso9660 - shows blank
How do I install it?

plays pressed CDs, burned DVDs.
Does not play burned CDs or DVDs, and won't read burned
data CDs and DVDs

cheers

PS I use TDK blanks.
 
Old 03-03-2015, 03:56 AM   #6
veerain
Senior Member
 
Registered: Mar 2005
Location: Earth bound to Helios
Distribution: Custom
Posts: 2,524

Rep: Reputation: 319Reputation: 319Reputation: 319Reputation: 319
Try:
Code:
modprobe iso9660
 
Old 03-03-2015, 01:31 PM   #7
fatmac
LQ Guru
 
Registered: Sep 2011
Location: Upper Hale, Surrey/Hants Border, UK
Distribution: Mainly Devuan, antiX, & Void, with Tiny Core, Fatdog, & BSD thrown in.
Posts: 5,579

Rep: Reputation: Disabled
Also check that your user is in the cdrom group.
 
Old 03-03-2015, 03:51 PM   #8
michaelk
Moderator
 
Registered: Aug 2002
Posts: 25,928

Rep: Reputation: 6001Reputation: 6001Reputation: 6001Reputation: 6001Reputation: 6001Reputation: 6001Reputation: 6001Reputation: 6001Reputation: 6001Reputation: 6001Reputation: 6001
Quote:
plays pressed CDs, burned DVDs.
Does not play burned CDs or DVDs, and won't read burned
data CDs and DVDs
I assume you mean:
Plays pressed CDs and DVDs
Does not play burned CDs or DVDs. (I assume music and movies.)
Will not read burned data CDs and DVDs

I assume that all burned discs will work on the laptop.

Did you burn all the discs on your laptop?
Have you tried playing or reading them in other computers?

Post the output of the command (as root):
modinfo iso9660
 
Old 03-03-2015, 11:56 PM   #9
beckwith
Member
 
Registered: Nov 2002
Location: Western Australia
Distribution: Mint / ubuntu
Posts: 118

Original Poster
Rep: Reputation: 15
Hello,
modprobe iso6990 shows nothing.
Yes I am the cdrom.
 
Old 03-04-2015, 03:00 AM   #10
fatmac
LQ Guru
 
Registered: Sep 2011
Location: Upper Hale, Surrey/Hants Border, UK
Distribution: Mainly Devuan, antiX, & Void, with Tiny Core, Fatdog, & BSD thrown in.
Posts: 5,579

Rep: Reputation: Disabled
Is your desktop considerably older than your laptop, if so it may be track alignment incompatibilities, or it will not read CDRW/DVDRW discs.
 
Old 03-04-2015, 01:30 PM   #11
business_kid
LQ Guru
 
Registered: Jan 2006
Location: Ireland
Distribution: Slackware, Slarm64 & Android
Posts: 16,655

Rep: Reputation: 2406Reputation: 2406Reputation: 2406Reputation: 2406Reputation: 2406Reputation: 2406Reputation: 2406Reputation: 2406Reputation: 2406Reputation: 2406Reputation: 2406
Quote:
modprobe iso6990 shows nothing.
That's normal modprobe iso9660 might do something. It shows nothing. Check with the command I gave earlier.
lsmod |grep iso9660
 
Old 03-04-2015, 07:24 PM   #12
beckwith
Member
 
Registered: Nov 2002
Location: Western Australia
Distribution: Mint / ubuntu
Posts: 118

Original Poster
Rep: Reputation: 15
lsmod|grep iso9660 shows blank (already posted).
The desktop mchine is 6 months old, the lap 6 years.
 
Old 03-04-2015, 07:36 PM   #13
michaelk
Moderator
 
Registered: Aug 2002
Posts: 25,928

Rep: Reputation: 6001Reputation: 6001Reputation: 6001Reputation: 6001Reputation: 6001Reputation: 6001Reputation: 6001Reputation: 6001Reputation: 6001Reputation: 6001Reputation: 6001
Can you answer my questions from my earlier post?
 
Old 03-05-2015, 02:36 AM   #14
beckwith
Member
 
Registered: Nov 2002
Location: Western Australia
Distribution: Mint / ubuntu
Posts: 118

Original Poster
Rep: Reputation: 15
michaelk...

I assume you mean:
Plays pressed CDs and DVDs --->Correct
Does not play burned CDs or DVDs. (I assume music and movies.) --->Correct
Will not read burned data CDs and DVDs --->Correct

I assume that all burned discs will work on the laptop. ---> all seem to work, but
it is difficult to tell which were burnt under Debian 7.8.0, however backup DVDs
for 12 Jan, 19 Jan, 26 Jan, and 2 Feb 2015 (all created on the desktop m/c) do
mount on the lap. This proves that the optcal drive on the desktop m/c was working
until a month ago.

Did you burn all the discs on your laptop? ---> NO, backup DVDs are made on the
main desktop system. I found One data CD created on the laptop: it works on the
laptop, but not on the desktop pc.

Have you tried playing or reading them in other computers? ---> I don't have access to
other machines, but i could if pushed, but I think that the laptop proves that the
fault is with the desktop pc (both running the same Debian 7.8.0).

Post the output of the command (as root):
modinfo iso9660

Quote:
/home/beckwith $ su -c 'modinfo iso9660'
Password:
filename: /lib/modules/3.2.0-4-amd64/kernel/fs/isofs/isofs.ko
alias: iso9660
license: GPL
depends:
intree: Y
vermagic: 3.2.0-4-amd64 SMP mod_unload modversions
 
Old 03-05-2015, 04:35 AM   #15
veerain
Senior Member
 
Registered: Mar 2005
Location: Earth bound to Helios
Distribution: Custom
Posts: 2,524

Rep: Reputation: 319Reputation: 319Reputation: 319Reputation: 319
Do you have wodim installed?

Try burning a data cd with one of the options -tao, -dao, -sao or -raw96r.

Check which works in desktop.

I think it is a problem of compatibilty. Also write in lowest speed supported e.g. 2x
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
view optical media and optical drive information in CLI m4rtin Linux - Server 7 03-03-2016 10:54 AM
[SOLVED] External optical drive mount problem CollieJim Linux - Laptop and Netbook 13 04-20-2011 07:10 AM
Optical drive problem markomofa Linux - Newbie 2 08-20-2009 12:51 AM
I need to mount a floppy drive, optical drive, jumpdrive & burning CD's. talagm SUSE / openSUSE 7 04-23-2009 05:14 AM
Optical drive problem Mandriva 2008.0 Mr B Linux - Newbie 6 01-20-2008 03:52 AM

LinuxQuestions.org > Forums > Linux Forums > Linux - Software

All times are GMT -5. The time now is 01:40 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration