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Thread: mount: special device dev/scd0 does not exist

  1. #1
    Join Date
    Dec 2008
    Location
    Brissy
    Beans
    11
    Distro
    Ubuntu 8.04 Hardy Heron

    Red face mount: special device dev/scd0 does not exist

    Hello there..

    Well, I have checked about my issue here but, I did not find a suitable answer in any of the threads. I have a IBM R52 machine and I am running Ubuntu 12.04 LTS. I am trying to mount my cdrom
    but I have the error "mount: special device dev/scd0 does not exist". I have done the following and I am not sure if I am missing something.

    1) /etc/fstab/ output for my cdrom is the following:
    /dev/scd0 /media/cdrom0 udf,iso9660 user,noauto,exec,utf8 0 0

    As far as I understand I can execute mount like this:

    mount /media/cdrom0

    and that should be enough for me to be able to access the cdrom in the /media/cdrom0 mount point.

    2) I have checked the output of the following command.

    sudo lshw -short

    and this is what I get in return ( I have just pasted the part related to the cdrom)

    /0/100/1f.2/1 /dev/cdrom disk DVD-RAM UJ-830S
    /0/100/1f.2/1/0 /dev/cdrom disk

    I am new to linux and I think that I understand the mechanics of mount, but I am just wondering if I am missing something here.
    any help will be really appreciated.

    Kind regards

  2. #2
    Join Date
    Apr 2012
    Beans
    5,967

    Re: mount: special device dev/scd0 does not exist

    First of all is this the Server or Desktop edition? The Desktop edition should automount CDROMs by default (in /media/cdrom), only the Server edition should need manual mounting

    If you *do* have the server edition, then how did you determine the block device name /dev/scd0? are you sure it's correct? Since lshw is telling you that the block device is (or at least has a symlink to) /dev/cdrom you should be able to use that e.g. on my system the 'real' block device is /dev/sr0 but I can use the symlink /dev/cdrom to mount it

    Code:
    $ $ sudo lshw -C disk
      *-cdrom
           description: DVD-RAM writer
           product: DVD-RAM UJ-842
           vendor: MATSHITA
           physical id: 0.0.0
           bus info: scsi@4:0.0.0
           logical name: /dev/cdrom
           logical name: /dev/cdrw
           logical name: /dev/dvd
           logical name: /dev/dvdrw
           logical name: /dev/sr0
           version: RB01
           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
    $
    $
    $ sudo mount /dev/cdrom /media/cdrom
    mount: block device /dev/sr0 is write-protected, mounting read-only

  3. #3
    Join Date
    Dec 2008
    Location
    Brissy
    Beans
    11
    Distro
    Ubuntu 8.04 Hardy Heron

    Re: mount: special device dev/scd0 does not exist

    Hi there

    it is a desktop ediiton. I have tried your post but I have the following error.

    *-disk
    description: ATA Disk
    product: IC25N080ATMR04-0
    vendor: Hitachi
    physical id: 0
    bus info: scsi@0:0.0.0
    logical name: /dev/sda
    version: MO4O
    serial: MRG4W9K7G3USKH
    size: 74GiB (80GB)
    capabilities: partitioned partitioned:dos
    configuration: ansiversion=5 signature=cccdcccd
    *-cdrom
    description: DVD-RAM writer
    product: DVD-RAM UJ-830S
    vendor: MATSHITA
    physical id: 1
    bus info: scsi@1:0.0.0
    logical name: /dev/cdrom
    logical name: /dev/cdrw
    logical name: /dev/dvd
    logical name: /dev/dvdrw
    logical name: /dev/sr0
    version: 1.02
    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
    wilson@w:~$ sudo mount /dev/sr0 /media/cdrom0
    mount: you must specify the filesystem type

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