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Thread: "No root file system is defined"

  1. #1
    Join Date
    Oct 2008
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    "No root file system is defined"

    Right after installing Ubuntu through Wubi and it boots up for the first time, after doing the first part of the system check I get this error.
    "No root file system is defined
    Please correct this from the partitioning menu"
    and won't let me go anywhere from there. I've reinstalled about 6 times and still nothing. I'm running Windows Vista home premium SP1 on an AMD dual core processor.
    Last edited by Sonic011; October 15th, 2008 at 03:12 AM.

  2. #2
    Join Date
    Feb 2005
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    5,138

    Re: "No root file system is defined"

    Known bug, already fixed, you can use wubi 511+ for that

    http://wubi-installer.org/devel/minefield

    Note that there will be another issue after second reboot (https://bugs.edge.launchpad.net/ubun...r/+bug/283520/).
    You have to add

    root ()/ubuntu/disks

    before the kernel lines in /ubuntu/disks/boot/grub/menu.lst
    and also edit
    # groot=...
    Last edited by ago; October 15th, 2008 at 08:36 AM.

  3. #3
    Join Date
    Oct 2008
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    Re: "No root file system is defined"

    Quote Originally Posted by ago View Post
    Known bug, already fixed, you can use wubi 511+ for that

    http://wubi-installer.org/devel/minefield

    Note that there will be another issue after second reboot (https://bugs.edge.launchpad.net/ubun...r/+bug/283520/).
    You have to add

    root ()/ubuntu/disks

    before the kernel lines in /ubuntu/disks/boot/grub/menu.lst
    and also edit
    # groot=...
    How would I add the root ()/ubuntu/disks?

  4. #4
    Join Date
    Feb 2005
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    5,138

    Re: "No root file system is defined"

    Edit the file in notepad, also change

    # groot=()/ubuntu/disks

  5. #5
    Join Date
    Oct 2008
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    9

    Re: "No root file system is defined"

    Quote Originally Posted by ago View Post
    Edit the file in notepad, also change

    # groot=()/ubuntu/disks
    Even after adding the stuff to the file I get Error 15 when trying to boot.
    Last edited by Sonic011; October 16th, 2008 at 12:45 AM.

  6. #6
    Join Date
    Feb 2005
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    5,138

    Re: "No root file system is defined"

    You also have to add

    root ()/ubuntu/disks

    before each line that starts with "kernel"

  7. #7
    Join Date
    Dec 2007
    Location
    California
    Beans
    12
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: "No root file system is defined"

    If this is a known bug, why is it still on the 8.10 ISO that I just downloaded?

  8. #8
    Join Date
    Oct 2008
    Beans
    9

    Re: "No root file system is defined"

    I'm sorry, I cant figure this out at all. I dont where to add the stuff, if I could get like a video or something on how to do this
    http://www.filesavr.com/menu_1
    I uploaded my menu.lst if someone wants to like do it for me because I'm a complete idiot with this stuff and I dont want to mess anything up.
    Last edited by Sonic011; November 15th, 2008 at 05:02 AM.

  9. #9
    Join Date
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    USA
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    149
    Distro
    Ubuntu 11.04 Natty Narwhal

    Re: "No root file system is defined"

    Sonic011 I'll try my best to help you if someone else hasn't already, but ago needs to clarify himself a little. Most people i see on these forums try to give an example of what they mean or something.(No offense ago, I understand you are helping a lot people)
    Last edited by Marius Derekus; November 16th, 2008 at 06:25 AM.

  10. #10
    Join Date
    Nov 2008
    Location
    USA
    Beans
    149
    Distro
    Ubuntu 11.04 Natty Narwhal

    Re: "No root file system is defined"

    It looks like he means(the bold words represent the added text):

    # menu.lst - See: grub(8), info grub, update-grub(8)
    # grub-install(8), grub-floppy(8),
    # grub-md5-crypt, /usr/share/doc/grub
    # and /usr/share/doc/grub-doc/.

    ## default num
    # Set the default entry to the entry number NUM. Numbering starts from 0, and
    # the entry number 0 is the default if the command is not used.
    #
    # You can specify 'saved' instead of a number. In this case, the default entry
    # is the entry saved with the command 'savedefault'.
    # WARNING: If you are using dmraid do not use 'savedefault' or your
    # array will desync and will not let you boot your system.
    default 0

    ## timeout sec
    # Set a timeout, in SEC seconds, before automatically booting the default entry
    # (normally the first entry defined).
    timeout 10

    ## hiddenmenu
    # Hides the menu by default (press ESC to see the menu)
    #hiddenmenu

    # Pretty colours
    #color cyan/blue white/blue

    ## password ['--md5'] passwd
    # If used in the first section of a menu file, disable all interactive editing
    # control (menu entry editor and command-line) and entries protected by the
    # command 'lock'
    # e.g. password topsecret
    # password --md5 $1$gLhU0/$aW78kHK1QfV3P2b2znUoe/
    # password topsecret

    #
    # examples
    #
    # title Windows 95/98/NT/2000
    # root (hd0,0)
    # makeactive
    # chainloader +1
    #
    # title Linux
    # root ()/ubuntu/disks (hd0,1)
    # kernel /vmlinuz root=/dev/hda2 ro
    #

    #
    # Put static boot stanzas before and/or after AUTOMAGIC KERNEL LIST

    ### BEGIN AUTOMAGIC KERNELS LIST
    ## lines between the AUTOMAGIC KERNELS LIST markers will be modified
    ## by the debian update-grub script except for the default options below

    ## DO NOT UNCOMMENT THEM, Just edit them to your needs

    ## ## Start Default Options ##
    ## default kernel options
    ## default kernel options for automagic boot options
    ## If you want special options for specific kernels use kopt_x_y_z
    ## where x.y.z is kernel version. Minor versions can be omitted.
    ## e.g. kopt=root=/dev/hda1 ro
    ## kopt_2_6_8=root=/dev/hdc1 ro
    ## kopt_2_6_8_2_686=root=/dev/hdc2 ro
    # kopt=root=UUID=7AE8BB0CE8BAC5A3 loop=/ubuntu/disks/root.disk ro ROOTFLAGS=syncio

    ## default grub root device
    ## e.g. groot=(hd0,0)
    # groot=()/ubuntu/disks should update-grub create alternative automagic boot options
    ## e.g. alternative=true
    ## alternative=false
    # alternative=true

    ## should update-grub lock alternative automagic boot options
    ## e.g. lockalternative=true
    ## lockalternative=false
    # lockalternative=false

    ## additional options to use with the default boot option, but not with the
    ## alternatives
    ## e.g. defoptions=vga=791 resume=/dev/hda5
    # defoptions=quiet splash

    ## should update-grub lock old automagic boot options
    ## e.g. lockold=false
    ## lockold=true
    # lockold=false

    ## Xen hypervisor options to use with the default Xen boot option
    # xenhopt=

    ## Xen Linux kernel options to use with the default Xen boot option
    # xenkopt=console=tty0

    ## altoption boot targets option
    ## multiple altoptions lines are allowed
    ## e.g. altoptions=(extra menu suffix) extra boot options
    ## altoptions=(recovery) single
    # altoptions=(recovery mode) single

    ## controls how many kernels should be put into the menu.lst
    ## only counts the first occurence of a kernel, not the
    ## alternative kernel options
    ## e.g. howmany=all
    ## howmany=7
    # howmany=all

    ## should update-grub create memtest86 boot option
    ## e.g. memtest86=true
    ## memtest86=false
    # memtest86=true

    ## should update-grub adjust the value of the default booted system
    ## can be true or false
    # updatedefaultentry=false

    ## should update-grub add savedefault to the default options
    ## can be true or false
    # savedefault=false

    ## ## End Default Options ##

    title Ubuntu intrepid (development branch), kernel 2.6.27-7-generic
    uuid 7AE8BB0CE8BAC5A3
    kernel root ()/ubuntu/disks/boot/vmlinuz-2.6.27-7-generic root=UUID=7AE8BB0CE8BAC5A3 loop=/ubuntu/disks/root.disk ro ROOTFLAGS=syncio quiet splash
    initrd /boot/initrd.img-2.6.27-7-generic

    title Ubuntu intrepid (development branch), kernel 2.6.27-7-generic (recovery mode)
    uuid 7AE8BB0CE8BAC5A3
    kernel root ()/ubuntu/disks/boot/vmlinuz-2.6.27-7-generic root=UUID=7AE8BB0CE8BAC5A3 loop=/ubuntu/disks/root.disk ro ROOTFLAGS=syncio single
    initrd /boot/initrd.img-2.6.27-7-generic

    title Ubuntu intrepid (development branch), memtest86+
    uuid 7AE8BB0CE8BAC5A3
    kernel root ()/ubuntu/disks/boot/memtest86+.bin

    ### END DEBIAN AUTOMAGIC KERNELS LIST

    # This is a divider, added to separate the menu items below from the Debian
    # ones.
    title Other operating systems:
    root


    # This entry automatically added by the Debian installer for a non-linux OS
    # on /dev/sda1
    title Windows Vista/Longhorn (loader)
    root (hd0,0)
    savedefault
    chainloader +1


    # This entry automatically added by the Debian installer for a non-linux OS
    # on /dev/sda2
    title Windows Vista/Longhorn (loader)
    root (hd0,1)
    savedefault
    chainloader +1
    Ask if you need more help, I'm trying to help the best i can.

    You could maybe try copying (not cutting) menu.1st, placing it in another directory, and then edit the original one as i have shown above. Then if it doesn't work, put the old menu.1st back where it was and overwrite the edited one.
    Last edited by Marius Derekus; November 16th, 2008 at 02:32 AM.

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