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Thread: cd-rom is gone

  1. #1
    Join Date
    Mar 2009

    cd-rom is gone

    A couple of days ago i switched some of my HDD (all sata), but now ubuntu doesn't find my CD-rom anymore (when i putt in a cd it does nothing, it doesn't even mount the cd at the bootup)

    this is my /etc/fstab file

    # /etc/fstab: static file system information.
    # -- This file has been automaticly generated by ntfs-config --
    # <file system> <mount point> <type> <options> <dump> <pass>

    proc /proc proc defaults 0 0
    # Entry for /dev/sda7 :
    UUID=7634ef3b-2acf-47cf-947d-44c4d3e76d24 / ext3 relatime,errors=remount-ro 0 1
    # Entry for /dev/sda6 :
    UUID=5d66d160-c960-4b23-92d4-6a1f7d73c24e none swap sw 0 0
    /dev/scd0 /media/cdrom0 udf,iso9660 user,noauto,exec,utf8 0 0
    /dev/fd0 /media/floppy0 auto rw,user,noauto,exec,utf8 0 0
    /dev/sda1 /media/W ntfs-3g defaults,locale=en_US.UTF-8 0 0
    /dev/sdb1 /media/T ntfs-3g defaults,locale=en_US.UTF-8 0 0

    when i look in the /dev/ folder there's no /dev/scd0 or /dev/cdrom

    can anybody solve this (sorry for the bad english)

  2. #2
    Join Date
    Nov 2006
    Long Island
    Lubuntu 11.10 Oneiric Ocelot

    Re: cd-rom is gone

    I'm thinking that /dev/scd0 may no longer be the correct file for your CD drive. Post the output of:

    sudo blkid
    That should give you a bunch of info about the drives attached to your computer.

  3. #3
    Join Date
    Mar 2009

    Re: cd-rom is gone

    the result

    /dev/sda1: UUID="2810DEA310DE76F2" LABEL="W" TYPE="ntfs"
    /dev/sda5: UUID="5ACCD8CFCCD8A693" LABEL="D" TYPE="ntfs"
    /dev/sda6: TYPE="swap" UUID="5d66d160-c960-4b23-92d4-6a1f7d73c24e"
    /dev/sda7: UUID="7634ef3b-2acf-47cf-947d-44c4d3e76d24" TYPE="ext3"
    /dev/sdb1: UUID="882011B12011A6EA" LABEL="T" TYPE="ntfs"
    /dev/sda8: UUID="f688cb7f-02cb-4d9e-8f79-1c606ed21b6e" SEC_TYPE="ext2" TYPE="ext3"
    /dev/ramzswap0: TYPE="swap"

  4. #4
    Join Date
    Apr 2009

    Re: cd-rom is gone

    My DVD burner disappeared with one of the past few kernel updates. It no longer shows up in /dev, and according to lshw and blkid, it doesn't exist.

    I've already tried tweaking BIOS options. Someone informed me that AHCI can cause such behaviour, but my board is a VIA-C7 with no AHCI option - and to the best of my knowledge, nothing changed except the kernel version.

    A kernel update partially breaking compatibility with your PATA or SATA controller seems most likely... but who knows?

    Good luck.

  5. #5

    Re: cd-rom is gone

    Your statement:

    "A couple of days ago i switched some of my HDD"

    may be a clue into the problem (or may not). When you switched
    HDD drives, did you remember to check the hardware address jumpers at the back of each drive? Do you have a conflict with drive hardware addressing?

    When you boot into the BIOS, does it show all the drives, including your CD-ROM drive? BIOS not seeing the drive could be indicative of a hardware or hardware addressing problem?

    Bad cables are a possibility if you moved them around a lot, or maybe got one plugged into the motherboard incorrectly.

  6. #6
    Join Date
    Mar 2009

    Re: cd-rom is gone

    Personaly i think it has something to do with the kernel update because all my hdd drive are still working like they did even when i changed them back, it's just weir that my cd-rom drive is gone,

    by the way i check my bios and the cd rom drive is there

  7. #7
    Join Date
    Sep 2006
    Canberra, Australia
    Ubuntu 11.10 Oneiric Ocelot

    Re: cd-rom is gone

    I'm getting something similar after recent kernel updates for Karmic - iso9660 mounts not being recognised and unable to use "sudo mount -t iso9660 .......". Its playing merry heck with my virtual machines!
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