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Thread: Problem with dual boot

  1. #1
    Join Date
    Jan 2008
    Beans
    3
    Distro
    Ubuntu 7.10 Gutsy Gibbon

    Problem with dual boot

    Hi there,

    My situation is like: I have a PC with 2 hdds (80GB-with 3 NTFS partitions where is installed windows xp on C: and a 20,5GB - 2 partitions: first is ext3 with Ubuntu 8.10 on it and a FAT32).

    What I did was: Removed 80Gb hdd and installed Ubuntu 8.10 over my older 7.10 version but before that I've formated ext3 partition. After that, I've installed back the 80Gb hdd and booting ok into my fresh 8.10. There is no problem seeing my ntfs partitions.

    The thing is that I can't boot into my Windows XP. I've modified the /boot/grub/menu.lst and on the GRUB Boot Screen appears the winxp selection. But everytime I choose it, it gives me an error (last one: "Error 23: Error while parsing number...").

    This is my problem. Please help!

    Thanks in advance,

    Anatolie

  2. #2
    Join Date
    Mar 2008
    Location
    California, USA
    Beans
    8,111

    Re: Problem with dual boot

    Please first post:
    Code:
    sudo fdisk -lu
    cat /boot/grub/menu.lst
    And we can work from there.

  3. #3
    Join Date
    Jan 2008
    Beans
    3
    Distro
    Ubuntu 7.10 Gutsy Gibbon

    Re: Problem with dual boot

    root@CAM:~# fdisk -lu

    Disk /dev/sda: 80.0 GB, 80026361856 bytes
    255 heads, 63 sectors/track, 9729 cylinders, total 156301488 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Disk identifier: 0x41fd41fc

    Device Boot Start End Blocks Id System
    /dev/sda1 * 63 41206724 20603331 7 HPFS/NTFS
    /dev/sda2 41206725 156280319 57536797+ f W95 Ext'd (LBA)
    /dev/sda5 41206788 82558034 20675623+ 7 HPFS/NTFS
    /dev/sda6 82558098 156280319 36861111 7 HPFS/NTFS

    Disk /dev/sdb: 20.5 GB, 20547841536 bytes
    255 heads, 63 sectors/track, 2498 cylinders, total 40132503 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Disk identifier: 0xabf4abf4

    Device Boot Start End Blocks Id System
    /dev/sdb1 * 63 546209 273073+ 83 Linux
    /dev/sdb2 546210 40130369 19792080 f W95 Ext'd (LBA)
    /dev/sdb5 15631308 40130369 12249531 b W95 FAT32
    /dev/sdb6 546336 14876189 7164927 83 Linux
    /dev/sdb7 14876253 15631244 377496 82 Linux swap / Solaris

    Partition table entries are not in disk order
    root@CAM:~# cat /boot/grub/menu.lst
    # 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 15

    ## 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 (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=e8604c87-5f0f-49be-832d-c8eee0e8f5ff ro

    ## default grub root device
    ## e.g. groot=(hd0,0)
    # groot=e8604c87-5f0f-49be-832d-c8eee0e8f5ff

    ## 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 Microsoft Windows XP Professional
    root (sd0,0)
    savedefault
    makeactive
    chainloader +1

    title Ubuntu 8.10, kernel 2.6.27-7-generic
    uuid e8604c87-5f0f-49be-832d-c8eee0e8f5ff
    kernel /boot/vmlinuz-2.6.27-7-generic root=UUID=e8604c87-5f0f-49be-832d-c8eee0e8f5ff ro quiet splash
    initrd /boot/initrd.img-2.6.27-7-generic
    quiet

    title Ubuntu 8.10, kernel 2.6.27-7-generic (recovery mode)
    uuid e8604c87-5f0f-49be-832d-c8eee0e8f5ff
    kernel /boot/vmlinuz-2.6.27-7-generic root=UUID=e8604c87-5f0f-49be-832d-c8eee0e8f5ff ro single
    initrd /boot/initrd.img-2.6.27-7-generic

    title Ubuntu 8.10, memtest86+
    uuid e8604c87-5f0f-49be-832d-c8eee0e8f5ff
    kernel /boot/memtest86+.bin
    quiet

    ### END DEBIAN AUTOMAGIC KERNELS LIST
    root@CAM:~#

  4. #4
    Join Date
    Mar 2008
    Location
    California, USA
    Beans
    8,111

    Re: Problem with dual boot

    OK, first open your menu.lst
    Code:
    gksudo gedit /boot/grub/menu.lst
    First delete your existing Windows entry, and at the end very end of the file, add the following Windows entry:
    Code:
    title Microsoft Windows XP Professional
    root       (hd1,0)
    map        (hd0) (hd1)
    map        (hd1) (hd0)
    chainloader +1
    Reboot, and let me know if that works. If it doesn't, let me know exactly what happens when you select it from the Grub menu.

  5. #5
    Join Date
    Jan 2008
    Beans
    3
    Distro
    Ubuntu 7.10 Gutsy Gibbon

    Re: Problem with dual boot

    Dear caljohnsmith,

    Really thanks!!!! You are super great! I'm already in my Windows XP. Everything works just fine. Google is nothing If to compare to your knowledge!

    Many thanks & Best regards,

    Anatolie

  6. #6
    Join Date
    Mar 2008
    Location
    California, USA
    Beans
    8,111

    Re: Problem with dual boot

    That's great you can boot into Windows now, and I'm glad your booting problem was so easy to solve; cheers and have fun.

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