9.04 cannot mount CD/DVD drive.

[axxs]

Yup, having the same problem, I have searched the web for an answer ..

.. the system seems to recognise the cdrom is there, I just can't mount it with the result, after a short delay :

mount: /dev/sr0: unknown device

here's some info :

  *-cdrom
       description: DVD writer
       product: DVD+-RW GSA-H73N
       vendor: HL-DT-ST
       physical id: 0.0.0
       bus info: scsi@2:0.0.0
       logical name: /dev/cdrom
       logical name: /dev/cdrw
       logical name: /dev/dvd
       logical name: /dev/dvdrw
       logical name: /dev/scd0
       logical name: /dev/sr0
       version: B103
       serial: [HL-DT-STDVD+-RW GSA-H73NB10307/06/27 7U02
       capabilities: removable audio cd-r cd-rw dvd dvd-r
       configuration: ansiversion=5 status=nodisc

$ ls -lah /dev/cd*
lrwxrwxrwx 1 root root 3 2009-06-05 20:34 /dev/cdrom -> sr0
lrwxrwxrwx 1 root root 3 2009-06-05 20:34 /dev/cdrw -> sr0

dmesg :

[    4.052126] scsi 2:0:0:0: CD-ROM            HL-DT-ST DVD+-RW GSA-H73N B103 PQ: 0 ANSI: 5
[    4.063030] sr0: scsi3-mmc drive: 48x/48x writer cd/rw xa/form2 cdda tray
[    4.063033] Uniform CD-ROM driver Revision: 3.20
[    4.063111] sr 2:0:0:0: Attached scsi CD-ROM sr0
[    4.063145] sr 2:0:0:0: Attached scsi generic sg2 type 5

$ wodim --devices
wodim: Overview of accessible drives (1 found) :
-------------------------------------------------------------------------
 0  dev='/dev/scd0'     rwrw-- : 'HL-DT-ST' 'DVD+-RW GSA-H73N'
-------------------------------------------------------------------------

$ wodim --scanbus
scsibus2:
        2,0,0   200) 'HL-DT-ST' 'DVD+-RW GSA-H73N' 'B103' Removable CD-ROM
        2,1,0   201) *
        2,2,0   202) *
        2,3,0   203) *
        2,4,0   204) *
        2,5,0   205) *
        2,6,0   206) *
        2,7,0   207) *

so the drive is definitely seen by the system, something is screwy.

I have 3 computers in the office, purchased last year, the 'old hardware, so upgrade' comments are not the greatest answer to these issues, especially from a linux perspective.

I will have to roll back methinks

[retiredtechie]

I finally got mine working by editing fstab after finding the fix in a google search.

sudo gedit /etc/fstab
<password>

# /etc/fstab: static file system information.
#
# Use 'vol_id --uuid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    defaults        0       0
# / was on /dev/sda1 during installation
UUID=97f48878-4b54-484c-8a4e-4fa11aa9c2fc /               ext3    relatime,errors=remount-ro 0       1
# swap was on /dev/sda5 during installation
UUID=9f6f9e31-e4ff-4dd6-8622-a8d26b433d5f none            swap    sw              0       0
# Original setting
/dev/scd0       /media/cdrom0   udf,iso9660 user,noauto,exec,utf8 0       0
/dev/fd0        /media/floppy0  auto    rw,user,noauto,exec,utf8 0       0

Note the /dec/scd0 line above. Exchange the positions of udf,iso9660 like this:

# /etc/fstab: static file system information.
#
# Use 'vol_id --uuid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    defaults        0       0
# / was on /dev/sda1 during installation
UUID=97f48878-4b54-484c-8a4e-4fa11aa9c2fc /               ext3    relatime,errors=remount-ro 0       1
# swap was on /dev/sda5 during installation
UUID=9f6f9e31-e4ff-4dd6-8622-a8d26b433d5f none            swap    sw              0       0
# Revised setting to allow reading Windows formatted CDs and DVDs
/dev/scd0       /media/cdrom0   iso9660,udf user,noauto,exec,utf8 0       0
/dev/fd0        /media/floppy0  auto    rw,user,noauto,exec,utf8 0       0

Save the file. I think you may have to reboot to make it work, can't remember. Good luck.

[ufuntoo]

The switching of the iso9660 and udf did not work for me. Any one else have any epiphanies?

[mister_playboy]

I'm having similar problems. Some DVDs appear right away as expected. Some will eventually mount if left in the drive 3 to 5 minutes. Some refuse to mount at all.

sudo lshw -C disk

*-cdrom                 
       description: DVD-RAM writer
       product: DVD RW AD-7560A
       vendor: Optiarc
       physical id: 0.0.0
       bus info: scsi@3:0.0.0
       logical name: /dev/cdrom
       logical name: /dev/cdrw
       logical name: /dev/dvd
       logical name: /dev/dvdrw
       logical name: /dev/scd0
       logical name: /dev/sr0
       version: DS03
       capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
       configuration: ansiversion=5 status=ready
     *-medium
          physical id: 0
          logical name: /dev/cdrom

grep "UDMA" /var/log/dmesg

[    2.047334] ata1: SATA max UDMA/133 abar m2048@0xfc504000 port 0xfc504100 irq 2300
[    2.365239] ata1.00: ATA-8: FUJITSU MHY2160BH, 0000000B, max UDMA/100
[    2.366583] ata1.00: configured for UDMA/100
[    2.429770] ata4: PATA max UDMA/100 cmd 0x1f0 ctl 0x3f6 bmdma 0x1810 irq 14
[    2.429772] ata5: PATA max UDMA/100 cmd 0x170 ctl 0x376 bmdma 0x1818 irq 15
[    2.592452] ata4.00: ATAPI: Optiarc DVD RW AD-7560A, DS03, max UDMA/33
[    2.608383] ata4.00: configured for UDMA/33

dmesg | tail -n10 (with a disc that mounted after several minutes of spinning)

[   25.607873] sky2 eth0: Link is up at 100 Mbps, full duplex, flow control rx
[   25.608238] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   36.273027] eth0: no IPv6 routers present
[  265.272306] UDF-fs: Partition marked readonly; forcing readonly mount
[  265.596185] UDF-fs INFO UDF: Mounting volume 'DVDVolume', timestamp 2005/07/26 18:38 (1000)
[  575.806245] pcmcia: Detected deprecated PCMCIA ioctl usage from process: lshw.
[  575.806250] pcmcia: This interface will soon be removed from the kernel; please expect breakage unless you upgrade to new tools.
[  575.806253] pcmcia: see http://www.kernel.org/pub/linux/utils/kernel/pcmcia/pcmcia.html for details.
[  580.191248] UDF-fs: Partition marked readonly; forcing readonly mount
[  580.241965] UDF-fs INFO UDF: Mounting volume 'DVDVolume', timestamp 2005/06/13 05:01 (1000)

I have a Sony Vaio VGN-NR430E. What is going on?

[yashoda]

Dear RETIREDTECHIE,

u da man!

THANK YOU SO VERY MUCH for that posting, i switched the udf stuff... and rebooted, and it WORKS!


Really appreciated it!

[Sparken]

I had the same problem on one of my machines but not another.
Perhaps because the one that always works is a usb dvd/cd rom drive.
I tried swapping the iso9660,udf and no joy.
The apps would see the disk and show the CD title, but wouldn't read.

Haven't had the time to really figure out what is causing the problem;
it seems to be the way some applications call the CD/dvd rom drive.
When an application calls for /dev/sr0, the mount fails.
So I just added a line for it in /etc/fstab like so:

/dev/scd0       /media/cdrom0   iso9660,udf user,noauto,exec,utf8 0       0
/dev/sr0       /media/cdrom0   iso9660,udf user,noauto,exec,utf8 0       0

Now it works. Hope this helps in lieu of figuring out the "why" part.

[MCMalkemus]

Retiredtechie, your method worked great. Thanks. Just a simple mistake in the original code...

[poliltimmy]

retiredtechie,

THANK YOU THANK YOU THANK YOU!!!

Seems I spoke to soon. Jaunty only sees disks on start up. Same as Hardy and Intrepid.

[poliltimmy]

I had the same problem on one of my machines but not another.
Perhaps because the one that always works is a usb dvd/cd rom drive.
I tried swapping the iso9660,udf and no joy.
The apps would see the disk and show the CD title, but wouldn't read.

Haven't had the time to really figure out what is causing the problem;
it seems to be the way some applications call the CD/dvd rom drive.
When an application calls for /dev/sr0, the mount fails.
So I just added a line for it in /etc/fstab like so:

/dev/scd0       /media/cdrom0   iso9660,udf user,noauto,exec,utf8 0       0
/dev/sr0       /media/cdrom0   iso9660,udf user,noauto,exec,utf8 0       0

Now it works. Hope this helps in lieu of figuring out the "why" part.

I notice my fstab has no /dev/scd0 is this normal? I have 2 Rom drives One combo and one DVD burner.

# /etc/fstab: static file system information.
#
# Use 'vol_id --uuid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
# / was on /dev/sda6 during installation
UUID=18746631-5750-47a3-b856-af4a1b91c17d / ext3 relatime,errors=remount-ro 0 1
# swap was on /dev/sda7 during installation
UUID=7daa624c-1823-417a-ba0f-e6723c8e0a31 none swap sw 0 0
/dev/scd1 /media/cdrom0 iso9660,udf user,noauto,exec,utf8 0 0
/dev/fd0 /media/floppy0 auto rw,user,noauto,exec,utf8 0 0

[Nevart]

I'm having similar problems. Some DVDs appear right away as expected. Some will eventually mount if left in the drive 3 to 5 minutes. Some refuse to mount at all.


I have a Sony Vaio VGN-NR430E. What is going on?

Well, it is interesting that it is a Sony and they are really into DRM. So your problem with the "some DVDs not coming online for 3 to 5 minutes" could be some sort of DRM issue.... or not. But it is still interesting.

It's possible your drive's firmware is doing something, or maybe Ubuntu have jumped on the DRM bandwagon and it is something in the new version of Ubuntu.

Or maybe they just rushed this version out too quickly and this is a bug they could not catch.