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Thread: dual boot but grub not installed in MBR

  1. #1
    Join Date
    Jun 2011
    Beans
    21
    Distro
    Ubuntu

    dual boot but grub not installed in MBR

    Hi all,

    I just did a fresh install of Windows 7 and then Ubuntu 12.04 (because of this problem). My problem is that grub did not install in the MBR (Windows starts automatically). I'm able to boot in Ubuntu using the Ultimate boot CD and "Super Grub 2", which easily finds the grub config file on /dev/sda6.

    So I tried the usual

    Code:
    sudo update-grub 
    sudo grub-install /dev/sda
    but still nothing.

    I saw several threads about the same subject but they were quite complex cases, whereas I don't see anything special in my config?
    and it's not the first time I install an Ubuntu with this kind of config. am I missing something stupid?

    Also don't know if that matters but I did the installation using a USB drive (I checked that my hard drive was /dev/sda, anyway that should have worked the second time at least).

    Here is the bootinfoscript output:
    Code:
                      Boot Info Script 0.61      [1 April 2012]
    
    
    ============================= Boot Info Summary: ===============================
    
     => Windows is installed in the MBR of /dev/sda.
    
    sda1: __________________________________________________________________________
    
        File system:       ntfs
        Boot sector type:  Windows Vista/7: NTFS
        Boot sector info:  No errors found in the Boot Parameter Block.
        Operating System:  Windows 7
        Boot files:        /bootmgr /Boot/BCD /Windows/System32/winload.exe
    
    sda2: __________________________________________________________________________
    
        File system:       ntfs
        Boot sector type:  Windows Vista/7: NTFS
        Boot sector info:  No errors found in the Boot Parameter Block.
        Operating System:  
        Boot files:        
    
    sda3: __________________________________________________________________________
    
        File system:       Extended Partition
        Boot sector type:  -
        Boot sector info: 
    
    sda5: __________________________________________________________________________
    
        File system:       ext4
        Boot sector type:  -
        Boot sector info: 
        Operating System:  
        Boot files:        
    
    sda6: __________________________________________________________________________
    
        File system:       ext4
        Boot sector type:  -
        Boot sector info: 
        Operating System:  Ubuntu 12.04 LTS
        Boot files:        /boot/grub/grub.cfg /etc/fstab
    
    sda7: __________________________________________________________________________
    
        File system:       ext4
        Boot sector type:  -
        Boot sector info: 
        Operating System:  
        Boot files:        
    
    sda8: __________________________________________________________________________
    
        File system:       swap
        Boot sector type:  -
        Boot sector info: 
    
    ============================ Drive/Partition Info: =============================
    
    Drive: sda _____________________________________________________________________
    
    Disk /dev/sda: 320.1 GB, 320072933376 bytes
    255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    
    Partition  Boot  Start Sector    End Sector  # of Sectors  Id System
    
    /dev/sda1    *          2,048   122,882,047   122,880,000   7 NTFS / exFAT / HPFS
    /dev/sda2         122,882,048   368,642,047   245,760,000   7 NTFS / exFAT / HPFS
    /dev/sda3         368,642,048   625,141,759   256,499,712   5 Extended
    /dev/sda5         368,644,096   471,044,095   102,400,000  83 Linux
    /dev/sda6         471,046,144   544,774,143    73,728,000  83 Linux
    /dev/sda7         544,776,192   618,504,191    73,728,000  83 Linux
    /dev/sda8         618,506,240   625,141,759     6,635,520  82 Linux swap / Solaris
    
    
    "blkid" output: ________________________________________________________________
    
    Device           UUID                                   TYPE       LABEL
    
    /dev/sda1        781A64FB3C86B129                       ntfs       
    /dev/sda2        7D9A7E49385BFDF9                       ntfs       shared
    /dev/sda5        a05e448e-1a28-4939-8fa7-e4fb216f0da7   ext4       data
    /dev/sda6        59b6ce17-6b15-4bbc-a70a-5cf6857f09a7   ext4       
    /dev/sda7        3634f488-e56a-4df9-866f-509d4744d644   ext4       linux2
    /dev/sda8        8aa76b03-2f9a-4bb2-a42a-ade389eaefd4   swap       
    
    ================================ Mount points: =================================
    
    Device           Mount_Point              Type       Options
    
    /dev/sda1        /media/windows           fuseblk    (rw,nosuid,nodev,allow_other,default_permissions,blksize=4096)
    /dev/sda2        /media/shared            fuseblk    (rw,nosuid,nodev,allow_other,default_permissions,blksize=4096)
    /dev/sda5        /media/data              ext4       (rw)
    /dev/sda6        /                        ext4       (rw,errors=remount-ro)
    /dev/sda7        /media/linux2            ext4       (rw)
    
    
    =========================== sda6/boot/grub/grub.cfg: ===========================
    
    --------------------------------------------------------------------------------
    #
    # DO NOT EDIT THIS FILE
    #
    # It is automatically generated by grub-mkconfig using templates
    # from /etc/grub.d and settings from /etc/default/grub
    #
    
    ### BEGIN /etc/grub.d/00_header ###
    if [ -s $prefix/grubenv ]; then
      set have_grubenv=true
      load_env
    fi
    set default="0"
    if [ "${prev_saved_entry}" ]; then
      set saved_entry="${prev_saved_entry}"
      save_env saved_entry
      set prev_saved_entry=
      save_env prev_saved_entry
      set boot_once=true
    fi
    
    function savedefault {
      if [ -z "${boot_once}" ]; then
        saved_entry="${chosen}"
        save_env saved_entry
      fi
    }
    
    function recordfail {
      set recordfail=1
      if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi
    }
    
    function load_video {
      insmod efi_gop
      insmod efi_uga
      insmod video_bochs
      insmod video_cirrus
    }
    
    insmod part_msdos
    insmod ext2
    set root='(hd0,msdos6)'
    search --no-floppy --fs-uuid --set=root 59b6ce17-6b15-4bbc-a70a-5cf6857f09a7
    if loadfont /usr/share/grub/unicode.pf2 ; then
      set gfxmode=auto
      load_video
      insmod gfxterm
      insmod part_msdos
      insmod ext2
      set root='(hd0,msdos6)'
      search --no-floppy --fs-uuid --set=root 59b6ce17-6b15-4bbc-a70a-5cf6857f09a7
      set locale_dir=($root)/boot/grub/locale
      set lang=en_IE
      insmod gettext
    fi
    terminal_output gfxterm
    if [ "${recordfail}" = 1 ]; then
      set timeout=-1
    else
      set timeout=10
    fi
    ### END /etc/grub.d/00_header ###
    
    ### BEGIN /etc/grub.d/05_debian_theme ###
    set menu_color_normal=white/black
    set menu_color_highlight=black/light-gray
    if background_color 44,0,30; then
      clear
    fi
    ### END /etc/grub.d/05_debian_theme ###
    
    ### BEGIN /etc/grub.d/10_linux ###
    function gfxmode {
    	set gfxpayload="${1}"
    	if [ "${1}" = "keep" ]; then
    		set vt_handoff=vt.handoff=7
    	else
    		set vt_handoff=
    	fi
    }
    if [ "${recordfail}" != 1 ]; then
      if [ -e ${prefix}/gfxblacklist.txt ]; then
        if hwmatch ${prefix}/gfxblacklist.txt 3; then
          if [ ${match} = 0 ]; then
            set linux_gfx_mode=keep
          else
            set linux_gfx_mode=text
          fi
        else
          set linux_gfx_mode=text
        fi
      else
        set linux_gfx_mode=keep
      fi
    else
      set linux_gfx_mode=text
    fi
    export linux_gfx_mode
    if [ "${linux_gfx_mode}" != "text" ]; then load_video; fi
    menuentry 'Ubuntu, with Linux 3.2.0-23-generic' --class ubuntu --class gnu-linux --class gnu --class os {
    	recordfail
    	gfxmode $linux_gfx_mode
    	insmod gzio
    	insmod part_msdos
    	insmod ext2
    	set root='(hd0,msdos6)'
    	search --no-floppy --fs-uuid --set=root 59b6ce17-6b15-4bbc-a70a-5cf6857f09a7
    	linux	/boot/vmlinuz-3.2.0-23-generic root=UUID=59b6ce17-6b15-4bbc-a70a-5cf6857f09a7 ro   quiet splash $vt_handoff
    	initrd	/boot/initrd.img-3.2.0-23-generic
    }
    menuentry 'Ubuntu, with Linux 3.2.0-23-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
    	recordfail
    	insmod gzio
    	insmod part_msdos
    	insmod ext2
    	set root='(hd0,msdos6)'
    	search --no-floppy --fs-uuid --set=root 59b6ce17-6b15-4bbc-a70a-5cf6857f09a7
    	echo	'Loading Linux 3.2.0-23-generic ...'
    	linux	/boot/vmlinuz-3.2.0-23-generic root=UUID=59b6ce17-6b15-4bbc-a70a-5cf6857f09a7 ro recovery nomodeset 
    	echo	'Loading initial ramdisk ...'
    	initrd	/boot/initrd.img-3.2.0-23-generic
    }
    ### END /etc/grub.d/10_linux ###
    
    ### BEGIN /etc/grub.d/20_linux_xen ###
    ### END /etc/grub.d/20_linux_xen ###
    
    ### BEGIN /etc/grub.d/20_memtest86+ ###
    menuentry "Memory test (memtest86+)" {
    	insmod part_msdos
    	insmod ext2
    	set root='(hd0,msdos6)'
    	search --no-floppy --fs-uuid --set=root 59b6ce17-6b15-4bbc-a70a-5cf6857f09a7
    	linux16	/boot/memtest86+.bin
    }
    menuentry "Memory test (memtest86+, serial console 115200)" {
    	insmod part_msdos
    	insmod ext2
    	set root='(hd0,msdos6)'
    	search --no-floppy --fs-uuid --set=root 59b6ce17-6b15-4bbc-a70a-5cf6857f09a7
    	linux16	/boot/memtest86+.bin console=ttyS0,115200n8
    }
    ### END /etc/grub.d/20_memtest86+ ###
    
    ### BEGIN /etc/grub.d/30_os-prober ###
    menuentry "Windows 7 (loader) (on /dev/sda1)" --class windows --class os {
    	insmod part_msdos
    	insmod ntfs
    	set root='(hd0,msdos1)'
    	search --no-floppy --fs-uuid --set=root 781A64FB3C86B129
    	chainloader +1
    }
    ### END /etc/grub.d/30_os-prober ###
    
    ### BEGIN /etc/grub.d/40_custom ###
    # This file provides an easy way to add custom menu entries.  Simply type the
    # menu entries you want to add after this comment.  Be careful not to change
    # the 'exec tail' line above.
    ### END /etc/grub.d/40_custom ###
    
    ### BEGIN /etc/grub.d/41_custom ###
    if [ -f  $prefix/custom.cfg ]; then
      source $prefix/custom.cfg;
    fi
    ### END /etc/grub.d/41_custom ###
    --------------------------------------------------------------------------------
    
    =============================== sda6/etc/fstab: ================================
    
    --------------------------------------------------------------------------------
    # /etc/fstab: static file system information.
    #
    # Use 'blkid' 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    nodev,noexec,nosuid 0       0
    # / was on /dev/sda6 during installation
    UUID=59b6ce17-6b15-4bbc-a70a-5cf6857f09a7 /               ext4    errors=remount-ro 0       1
    # /media/data was on /dev/sda5 during installation
    UUID=a05e448e-1a28-4939-8fa7-e4fb216f0da7 /media/data     ext4    defaults        0       2
    # /media/linux2 was on /dev/sda7 during installation
    UUID=3634f488-e56a-4df9-866f-509d4744d644 /media/linux2   ext4    defaults        0       2
    # /media/shared was on /dev/sda2 during installation
    UUID=7D9A7E49385BFDF9 /media/shared   ntfs    defaults,umask=007,gid=46 0       0
    # /media/windows was on /dev/sda1 during installation
    UUID=781A64FB3C86B129 /media/windows  ntfs    defaults,umask=007,gid=46 0       0
    # swap was on /dev/sda8 during installation
    UUID=8aa76b03-2f9a-4bb2-a42a-ade389eaefd4 none            swap    sw              0       0
    --------------------------------------------------------------------------------
    
    =================== sda6: Location of files loaded by Grub: ====================
    
               GiB - GB             File                                 Fragment(s)
    
     242.835166931 = 260.742275072  boot/grub/grub.cfg                             1
     226.026367188 = 242.693963776  boot/initrd.img-3.2.0-23-generic               2
     226.745834351 = 243.466485760  boot/vmlinuz-3.2.0-23-generic                  1
     226.026367188 = 242.693963776  initrd.img                                     2
     226.745834351 = 243.466485760  vmlinuz                                        1
    Thanks for your help!

  2. #2
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
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    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: dual boot but grub not installed in MBR

    Boot script looks normal except that you do not have grub2's boot loader in the MBR (and core.img) in / (root).

    This command should have installed grub2's boot loader correctly. Did it report any errors?

    sudo grub-install /dev/sda

    Another bit more complete way:

    #to get grub2 to remember where to reinstall on updates:
    sudo dpkg-reconfigure grub-pc
    #Enter thru first pages,spacebar to choose/unchoose drive, enter to accept, do not choose partitions

    And it that does not work, you could try uninstalling & reinstalling. If you can boot you do not need liveCD.

    HOWTO: Purge and Reinstall Grub 2 from the Live CD
    http://ubuntuforums.org/showthread.php?t=1581099


    If you prefer a gui, this often helps you find issues and offers repairs.

    Boot Repair -Also handles LVM, GPT and separate /boot.:
    https://help.ubuntu.com/community/Boot-Repair
    You can repair many boot issues with this or 'Create BootInfo' report (Other Options) & post the link it creates, so we can see your exact configuration.
    For info on UEFI boot install & repair:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.




  3. #3
    Join Date
    Jun 2011
    Beans
    21
    Distro
    Ubuntu

    Re: dual boot but grub not installed in MBR

    Quote Originally Posted by oldfred View Post
    Boot script looks normal except that you do not have grub2's boot loader in the MBR (and core.img) in / (root).

    This command should have installed grub2's boot loader correctly. Did it report any errors?
    there were no errors:
    Code:
    sudo grub-install /dev/sda
    Installation finished. No error reported.
    Another bit more complete way:

    #to get grub2 to remember where to reinstall on updates:
    sudo dpkg-reconfigure grub-pc
    #Enter thru first pages,spacebar to choose/unchoose drive, enter to accept, do not choose partitions
    Yes, this works! except that I had to install the package using

    sudo apt-get install grub-pc

    and then when I rebooted the grub menu was there.

    I'd like to understand what happened: is it normal that this package was not installed? Could it be what caused the problem?

    Thank you very much!

  4. #4
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
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    Ubuntu 12.04 Precise Pangolin

    Re: dual boot but grub not installed in MBR

    Glad that worked.

    Not sure why, did you by any chance have grub legacy installed not grub2 (grub-pc) or even grub-efi? Not sure how it would not have grub2 installed. Both use grub install the same, I think, but I do not know why the original command did not complain either?
    For info on UEFI boot install & repair:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.




  5. #5
    Join Date
    Oct 2009
    Location
    Elgin, IL USA
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    2,526
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: dual boot but grub not installed in MBR

    Many people seem to have a similar problem, and when I used "Other" for partitioning during install, it seemed to default to something other than sda. It might be interesting to run bootinfoscript with the USB you booted from for install attached and see if grub was installed to that.
    i5 650 3.2 GHz, 8 GB, nvidia GTX 550 Ti 32" 1080p | i7-4700, 8 GB, Intel HD 4600/nvidia GTX 765M 15.6" 1080p | etc.

  6. #6
    Join Date
    Jun 2011
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    21
    Distro
    Ubuntu

    Re: dual boot but grub not installed in MBR

    ok, so in order to see what happened I did a second installation on a different partition using exactly the same process. Indeed I select the "Other" partitioning, and this time I carefully checked that the target device for grub was /dev/sda -> at the beginning it was /dev/sdb (not totally sure, the USB drive anyway) but once I had selected the partition it automatically changed to /dev/sda.
    However the result was the same: grub was not installed in the MBR (I would have been able to see the difference, simply because I had changed the time out for the one installed earlier).

    Not sure why, did you by any chance have grub legacy installed not grub2 (grub-pc) or even grub-efi? Not sure how it would not have grub2 installed. Both use grub install the same, I think, but I do not know why the original command did not complain either?
    I don't know what are these different versions of grub but here are the grub* packages installed right after the process:
    Code:
    erwan@erwan-R530:~$ dpkg --get-selections | grep grub
    grub-common                    install
    grub-efi                    install
    grub-efi-amd64                    install
    grub-efi-amd64-bin                install
    grub2-common                    install
    It might be interesting to run bootinfoscript with the USB you booted from for install attached and see if grub was installed to that.
    and here is the bootinfoscript output with the USB attached:

    Code:
                      Boot Info Script 0.61      [1 April 2012]
    
    
    ============================= Boot Info Summary: ===============================
    
     => Grub2 (v1.99) is installed in the MBR of /dev/sda and looks at sector 1 of 
        the same hard drive for core.img. core.img is at this location and looks 
        for (,msdos6)/boot/grub on this drive.
     => Syslinux MBR (4.04 and higher) is installed in the MBR of /dev/sdb.
    
    sda1: __________________________________________________________________________
    
        File system:       ntfs
        Boot sector type:  Windows Vista/7: NTFS
        Boot sector info:  No errors found in the Boot Parameter Block.
        Operating System:  Windows 7
        Boot files:        /bootmgr /Boot/BCD /Windows/System32/winload.exe
    
    sda2: __________________________________________________________________________
    
        File system:       ntfs
        Boot sector type:  Windows Vista/7: NTFS
        Boot sector info:  No errors found in the Boot Parameter Block.
        Operating System:  
        Boot files:        
    
    sda3: __________________________________________________________________________
    
        File system:       Extended Partition
        Boot sector type:  -
        Boot sector info: 
    
    sda5: __________________________________________________________________________
    
        File system:       ext4
        Boot sector type:  -
        Boot sector info: 
        Operating System:  
        Boot files:        
    
    sda6: __________________________________________________________________________
    
        File system:       ext4
        Boot sector type:  -
        Boot sector info: 
        Operating System:  Ubuntu 12.04 LTS
        Boot files:        /boot/grub/grub.cfg /etc/fstab /boot/grub/core.img
    
    sda7: __________________________________________________________________________
    
        File system:       ext4
        Boot sector type:  -
        Boot sector info: 
        Operating System:  Ubuntu 12.04 LTS
        Boot files:        /boot/grub/grub.cfg /etc/fstab
    
    sda8: __________________________________________________________________________
    
        File system:       swap
        Boot sector type:  -
        Boot sector info: 
    
    sdb1: __________________________________________________________________________
    
        File system:       vfat
        Boot sector type:  SYSLINUX 4.06 4.06-pre1
        Boot sector info:  Syslinux looks at sector 11007680 of /dev/sdb1 for 
                           its second stage. SYSLINUX is installed in the  
                           directory. No errors found in the Boot Parameter Block.
        Operating System:  
        Boot files:        /boot/grub/grub.cfg /syslinux/syslinux.cfg 
                           /efi/boot/bootx64.efi /ldlinux.sys
    
    ============================ Drive/Partition Info: =============================
    
    Drive: sda _____________________________________________________________________
    
    Disk /dev/sda: 320.1 GB, 320072933376 bytes
    255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    
    Partition  Boot  Start Sector    End Sector  # of Sectors  Id System
    
    /dev/sda1    *          2,048   122,882,047   122,880,000   7 NTFS / exFAT / HPFS
    /dev/sda2         122,882,048   368,642,047   245,760,000   7 NTFS / exFAT / HPFS
    /dev/sda3         368,642,048   625,141,759   256,499,712   5 Extended
    /dev/sda5         368,644,096   471,044,095   102,400,000  83 Linux
    /dev/sda6         471,046,144   544,774,143    73,728,000  83 Linux
    /dev/sda7         544,776,192   618,504,191    73,728,000  83 Linux
    /dev/sda8         618,506,240   625,141,759     6,635,520  82 Linux swap / Solaris
    
    
    Drive: sdb _____________________________________________________________________
    
    Disk /dev/sdb: 8000 MB, 8000110592 bytes
    160 heads, 19 sectors/track, 5139 cylinders, total 15625216 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    
    Partition  Boot  Start Sector    End Sector  # of Sectors  Id System
    
    /dev/sdb1    *             32    15,625,215    15,625,184   b W95 FAT32
    
    
    "blkid" output: ________________________________________________________________
    
    Device           UUID                                   TYPE       LABEL
    
    /dev/sda1        781A64FB3C86B129                       ntfs       
    /dev/sda2        7D9A7E49385BFDF9                       ntfs       shared
    /dev/sda5        a05e448e-1a28-4939-8fa7-e4fb216f0da7   ext4       data
    /dev/sda6        59b6ce17-6b15-4bbc-a70a-5cf6857f09a7   ext4       
    /dev/sda7        ae2f5a06-7cf8-4880-94c6-564bc239ffb6   ext4       
    /dev/sda8        8aa76b03-2f9a-4bb2-a42a-ade389eaefd4   swap       
    /dev/sdb1        E03B-7886                              vfat       PENDRIVE
    
    ================================ Mount points: =================================
    
    Device           Mount_Point              Type       Options
    
    /dev/sda7        /                        ext4       (rw,errors=remount-ro)
    /dev/sdb1        /media/PENDRIVE          vfat       (rw,nosuid,nodev,uid=1000,gid=1000,shortname=mixed,dmask=0077,utf8=1,showexec,flush,uhelper=udisks)
    
    
    =========================== sda6/boot/grub/grub.cfg: ===========================
    
    --------------------------------------------------------------------------------
    #
    # DO NOT EDIT THIS FILE
    #
    # It is automatically generated by grub-mkconfig using templates
    # from /etc/grub.d and settings from /etc/default/grub
    #
    
    ### BEGIN /etc/grub.d/00_header ###
    if [ -s $prefix/grubenv ]; then
      set have_grubenv=true
      load_env
    fi
    set default="0"
    if [ "${prev_saved_entry}" ]; then
      set saved_entry="${prev_saved_entry}"
      save_env saved_entry
      set prev_saved_entry=
      save_env prev_saved_entry
      set boot_once=true
    fi
    
    function savedefault {
      if [ -z "${boot_once}" ]; then
        saved_entry="${chosen}"
        save_env saved_entry
      fi
    }
    
    function recordfail {
      set recordfail=1
      if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi
    }
    
    function load_video {
      insmod vbe
      insmod vga
      insmod video_bochs
      insmod video_cirrus
    }
    
    insmod part_msdos
    insmod ext2
    set root='(hd0,msdos6)'
    search --no-floppy --fs-uuid --set=root 59b6ce17-6b15-4bbc-a70a-5cf6857f09a7
    if loadfont /usr/share/grub/unicode.pf2 ; then
      set gfxmode=auto
      load_video
      insmod gfxterm
      insmod part_msdos
      insmod ext2
      set root='(hd0,msdos6)'
      search --no-floppy --fs-uuid --set=root 59b6ce17-6b15-4bbc-a70a-5cf6857f09a7
      set locale_dir=($root)/boot/grub/locale
      set lang=en_IE
      insmod gettext
    fi
    terminal_output gfxterm
    if [ "${recordfail}" = 1 ]; then
      set timeout=-1
    else
      set timeout=60
    fi
    ### END /etc/grub.d/00_header ###
    
    ### BEGIN /etc/grub.d/05_debian_theme ###
    set menu_color_normal=white/black
    set menu_color_highlight=black/light-gray
    if background_color 44,0,30; then
      clear
    fi
    ### END /etc/grub.d/05_debian_theme ###
    
    ### BEGIN /etc/grub.d/10_linux ###
    function gfxmode {
        set gfxpayload="${1}"
        if [ "${1}" = "keep" ]; then
            set vt_handoff=vt.handoff=7
        else
            set vt_handoff=
        fi
    }
    if [ "${recordfail}" != 1 ]; then
      if [ -e ${prefix}/gfxblacklist.txt ]; then
        if hwmatch ${prefix}/gfxblacklist.txt 3; then
          if [ ${match} = 0 ]; then
            set linux_gfx_mode=keep
          else
            set linux_gfx_mode=text
          fi
        else
          set linux_gfx_mode=text
        fi
      else
        set linux_gfx_mode=keep
      fi
    else
      set linux_gfx_mode=text
    fi
    export linux_gfx_mode
    if [ "${linux_gfx_mode}" != "text" ]; then load_video; fi
    menuentry 'Ubuntu, with Linux 3.2.0-23-generic' --class ubuntu --class gnu-linux --class gnu --class os {
        recordfail
        gfxmode $linux_gfx_mode
        insmod gzio
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos6)'
        search --no-floppy --fs-uuid --set=root 59b6ce17-6b15-4bbc-a70a-5cf6857f09a7
        linux    /boot/vmlinuz-3.2.0-23-generic root=UUID=59b6ce17-6b15-4bbc-a70a-5cf6857f09a7 ro   quiet splash $vt_handoff
        initrd    /boot/initrd.img-3.2.0-23-generic
    }
    menuentry 'Ubuntu, with Linux 3.2.0-23-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
        recordfail
        insmod gzio
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos6)'
        search --no-floppy --fs-uuid --set=root 59b6ce17-6b15-4bbc-a70a-5cf6857f09a7
        echo    'Loading Linux 3.2.0-23-generic ...'
        linux    /boot/vmlinuz-3.2.0-23-generic root=UUID=59b6ce17-6b15-4bbc-a70a-5cf6857f09a7 ro recovery nomodeset 
        echo    'Loading initial ramdisk ...'
        initrd    /boot/initrd.img-3.2.0-23-generic
    }
    ### END /etc/grub.d/10_linux ###
    
    ### BEGIN /etc/grub.d/20_linux_xen ###
    ### END /etc/grub.d/20_linux_xen ###
    
    ### BEGIN /etc/grub.d/20_memtest86+ ###
    menuentry "Memory test (memtest86+)" {
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos6)'
        search --no-floppy --fs-uuid --set=root 59b6ce17-6b15-4bbc-a70a-5cf6857f09a7
        linux16    /boot/memtest86+.bin
    }
    menuentry "Memory test (memtest86+, serial console 115200)" {
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos6)'
        search --no-floppy --fs-uuid --set=root 59b6ce17-6b15-4bbc-a70a-5cf6857f09a7
        linux16    /boot/memtest86+.bin console=ttyS0,115200n8
    }
    ### END /etc/grub.d/20_memtest86+ ###
    
    ### BEGIN /etc/grub.d/30_os-prober ###
    menuentry "Windows 7 (loader) (on /dev/sda1)" --class windows --class os {
        insmod part_msdos
        insmod ntfs
        set root='(hd0,msdos1)'
        search --no-floppy --fs-uuid --set=root 781A64FB3C86B129
        chainloader +1
    }
    menuentry "Ubuntu, with Linux 3.2.0-23-generic (on /dev/sda7)" --class gnu-linux --class gnu --class os {
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos7)'
        search --no-floppy --fs-uuid --set=root ae2f5a06-7cf8-4880-94c6-564bc239ffb6
        linux /boot/vmlinuz-3.2.0-23-generic root=UUID=ae2f5a06-7cf8-4880-94c6-564bc239ffb6 ro quiet splash $vt_handoff
        initrd /boot/initrd.img-3.2.0-23-generic
    }
    menuentry "Ubuntu, with Linux 3.2.0-23-generic (recovery mode) (on /dev/sda7)" --class gnu-linux --class gnu --class os {
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos7)'
        search --no-floppy --fs-uuid --set=root ae2f5a06-7cf8-4880-94c6-564bc239ffb6
        linux /boot/vmlinuz-3.2.0-23-generic root=UUID=ae2f5a06-7cf8-4880-94c6-564bc239ffb6 ro recovery nomodeset
        initrd /boot/initrd.img-3.2.0-23-generic
    }
    ### END /etc/grub.d/30_os-prober ###
    
    ### BEGIN /etc/grub.d/40_custom ###
    # This file provides an easy way to add custom menu entries.  Simply type the
    # menu entries you want to add after this comment.  Be careful not to change
    # the 'exec tail' line above.
    ### END /etc/grub.d/40_custom ###
    
    ### BEGIN /etc/grub.d/41_custom ###
    if [ -f  $prefix/custom.cfg ]; then
      source $prefix/custom.cfg;
    fi
    ### END /etc/grub.d/41_custom ###
    --------------------------------------------------------------------------------
    
    =============================== sda6/etc/fstab: ================================
    
    --------------------------------------------------------------------------------
    UUID=781A64FB3C86B129 /media/windows ntfs-3g umask=007 0 0
    UUID=7D9A7E49385BFDF9 /media/shared ntfs-3g umask=007 0 0
    UUID=a05e448e-1a28-4939-8fa7-e4fb216f0da7 /media/data ext4 defaults 0 2
    UUID=59b6ce17-6b15-4bbc-a70a-5cf6857f09a7 / ext4 defaults 0 1
    UUID=ae2f5a06-7cf8-4880-94c6-564bc239ffb6 /media/linux2 ext4 defaults 0 0
    UUID=8aa76b03-2f9a-4bb2-a42a-ade389eaefd4 swap swap sw 0 0
    --------------------------------------------------------------------------------
    
    =================== sda6: Location of files loaded by Grub: ====================
    
               GiB - GB             File                                 Fragment(s)
    
     242.939407349 = 260.854202368  boot/grub/core.img                             1
     242.939376831 = 260.854169600  boot/grub/grub.cfg                             1
     226.026367188 = 242.693963776  boot/initrd.img-3.2.0-23-generic               2
     226.745834351 = 243.466485760  boot/vmlinuz-3.2.0-23-generic                  1
     226.026367188 = 242.693963776  initrd.img                                     2
     226.745834351 = 243.466485760  vmlinuz                                        1
    
    =========================== sda7/boot/grub/grub.cfg: ===========================
    
    --------------------------------------------------------------------------------
    #
    # DO NOT EDIT THIS FILE
    #
    # It is automatically generated by grub-mkconfig using templates
    # from /etc/grub.d and settings from /etc/default/grub
    #
    
    ### BEGIN /etc/grub.d/00_header ###
    if [ -s $prefix/grubenv ]; then
      set have_grubenv=true
      load_env
    fi
    set default="0"
    if [ "${prev_saved_entry}" ]; then
      set saved_entry="${prev_saved_entry}"
      save_env saved_entry
      set prev_saved_entry=
      save_env prev_saved_entry
      set boot_once=true
    fi
    
    function savedefault {
      if [ -z "${boot_once}" ]; then
        saved_entry="${chosen}"
        save_env saved_entry
      fi
    }
    
    function recordfail {
      set recordfail=1
      if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi
    }
    
    function load_video {
      insmod efi_gop
      insmod efi_uga
      insmod video_bochs
      insmod video_cirrus
    }
    
    insmod part_msdos
    insmod ext2
    set root='(hd0,msdos7)'
    search --no-floppy --fs-uuid --set=root ae2f5a06-7cf8-4880-94c6-564bc239ffb6
    if loadfont /usr/share/grub/unicode.pf2 ; then
      set gfxmode=auto
      load_video
      insmod gfxterm
      insmod part_msdos
      insmod ext2
      set root='(hd0,msdos7)'
      search --no-floppy --fs-uuid --set=root ae2f5a06-7cf8-4880-94c6-564bc239ffb6
      set locale_dir=($root)/boot/grub/locale
      set lang=en_IE
      insmod gettext
    fi
    terminal_output gfxterm
    if [ "${recordfail}" = 1 ]; then
      set timeout=-1
    else
      set timeout=10
    fi
    ### END /etc/grub.d/00_header ###
    
    ### BEGIN /etc/grub.d/05_debian_theme ###
    set menu_color_normal=white/black
    set menu_color_highlight=black/light-gray
    if background_color 44,0,30; then
      clear
    fi
    ### END /etc/grub.d/05_debian_theme ###
    
    ### BEGIN /etc/grub.d/10_linux ###
    function gfxmode {
        set gfxpayload="${1}"
        if [ "${1}" = "keep" ]; then
            set vt_handoff=vt.handoff=7
        else
            set vt_handoff=
        fi
    }
    if [ "${recordfail}" != 1 ]; then
      if [ -e ${prefix}/gfxblacklist.txt ]; then
        if hwmatch ${prefix}/gfxblacklist.txt 3; then
          if [ ${match} = 0 ]; then
            set linux_gfx_mode=keep
          else
            set linux_gfx_mode=text
          fi
        else
          set linux_gfx_mode=text
        fi
      else
        set linux_gfx_mode=keep
      fi
    else
      set linux_gfx_mode=text
    fi
    export linux_gfx_mode
    if [ "${linux_gfx_mode}" != "text" ]; then load_video; fi
    menuentry 'Ubuntu, with Linux 3.2.0-23-generic' --class ubuntu --class gnu-linux --class gnu --class os {
        recordfail
        gfxmode $linux_gfx_mode
        insmod gzio
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos7)'
        search --no-floppy --fs-uuid --set=root ae2f5a06-7cf8-4880-94c6-564bc239ffb6
        linux    /boot/vmlinuz-3.2.0-23-generic root=UUID=ae2f5a06-7cf8-4880-94c6-564bc239ffb6 ro   quiet splash $vt_handoff
        initrd    /boot/initrd.img-3.2.0-23-generic
    }
    menuentry 'Ubuntu, with Linux 3.2.0-23-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
        recordfail
        insmod gzio
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos7)'
        search --no-floppy --fs-uuid --set=root ae2f5a06-7cf8-4880-94c6-564bc239ffb6
        echo    'Loading Linux 3.2.0-23-generic ...'
        linux    /boot/vmlinuz-3.2.0-23-generic root=UUID=ae2f5a06-7cf8-4880-94c6-564bc239ffb6 ro recovery nomodeset 
        echo    'Loading initial ramdisk ...'
        initrd    /boot/initrd.img-3.2.0-23-generic
    }
    ### END /etc/grub.d/10_linux ###
    
    ### BEGIN /etc/grub.d/20_linux_xen ###
    ### END /etc/grub.d/20_linux_xen ###
    
    ### BEGIN /etc/grub.d/20_memtest86+ ###
    menuentry "Memory test (memtest86+)" {
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos7)'
        search --no-floppy --fs-uuid --set=root ae2f5a06-7cf8-4880-94c6-564bc239ffb6
        linux16    /boot/memtest86+.bin
    }
    menuentry "Memory test (memtest86+, serial console 115200)" {
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos7)'
        search --no-floppy --fs-uuid --set=root ae2f5a06-7cf8-4880-94c6-564bc239ffb6
        linux16    /boot/memtest86+.bin console=ttyS0,115200n8
    }
    ### END /etc/grub.d/20_memtest86+ ###
    
    ### BEGIN /etc/grub.d/30_os-prober ###
    menuentry "Windows 7 (loader) (on /dev/sda1)" --class windows --class os {
        insmod part_msdos
        insmod ntfs
        set root='(hd0,msdos1)'
        search --no-floppy --fs-uuid --set=root 781A64FB3C86B129
        chainloader +1
    }
    menuentry "Ubuntu, with Linux 3.2.0-23-generic (on /dev/sda6)" --class gnu-linux --class gnu --class os {
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos6)'
        search --no-floppy --fs-uuid --set=root 59b6ce17-6b15-4bbc-a70a-5cf6857f09a7
        linux /boot/vmlinuz-3.2.0-23-generic root=UUID=59b6ce17-6b15-4bbc-a70a-5cf6857f09a7 ro quiet splash $vt_handoff
        initrd /boot/initrd.img-3.2.0-23-generic
    }
    menuentry "Ubuntu, with Linux 3.2.0-23-generic (recovery mode) (on /dev/sda6)" --class gnu-linux --class gnu --class os {
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos6)'
        search --no-floppy --fs-uuid --set=root 59b6ce17-6b15-4bbc-a70a-5cf6857f09a7
        linux /boot/vmlinuz-3.2.0-23-generic root=UUID=59b6ce17-6b15-4bbc-a70a-5cf6857f09a7 ro recovery nomodeset
        initrd /boot/initrd.img-3.2.0-23-generic
    }
    ### END /etc/grub.d/30_os-prober ###
    
    ### BEGIN /etc/grub.d/40_custom ###
    # This file provides an easy way to add custom menu entries.  Simply type the
    # menu entries you want to add after this comment.  Be careful not to change
    # the 'exec tail' line above.
    ### END /etc/grub.d/40_custom ###
    
    ### BEGIN /etc/grub.d/41_custom ###
    if [ -f  $prefix/custom.cfg ]; then
      source $prefix/custom.cfg;
    fi
    ### END /etc/grub.d/41_custom ###
    --------------------------------------------------------------------------------
    
    =============================== sda7/etc/fstab: ================================
    
    --------------------------------------------------------------------------------
    # /etc/fstab: static file system information.
    #
    # Use 'blkid' 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    nodev,noexec,nosuid 0       0
    # / was on /dev/sda7 during installation
    UUID=ae2f5a06-7cf8-4880-94c6-564bc239ffb6 /               ext4    errors=remount-ro 0       1
    # swap was on /dev/sda8 during installation
    UUID=8aa76b03-2f9a-4bb2-a42a-ade389eaefd4 none            swap    sw              0       0
    --------------------------------------------------------------------------------
    
    =================== sda7: Location of files loaded by Grub: ====================
    
               GiB - GB             File                                 Fragment(s)
    
     278.156070709 = 298.667806720  boot/grub/grub.cfg                             1
     261.308593750 = 280.577966080  boot/initrd.img-3.2.0-23-generic               2
     273.903060913 = 294.101172224  boot/vmlinuz-3.2.0-23-generic                  1
     261.308593750 = 280.577966080  initrd.img                                     2
     273.903060913 = 294.101172224  vmlinuz                                        1
    
    =========================== sdb1/boot/grub/grub.cfg: ===========================
    
    --------------------------------------------------------------------------------
    
    if loadfont /boot/grub/font.pf2 ; then
        set gfxmode=auto
        insmod efi_gop
        insmod efi_uga
        insmod gfxterm
        terminal_output gfxterm
    fi
    
    set menu_color_normal=white/black
    set menu_color_highlight=black/light-gray
    
    menuentry "Try Ubuntu without installing" {
        set gfxpayload=keep
        linux    /casper/vmlinuz  file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash --
        initrd    /casper/initrd.lz
    }
    menuentry "Install Ubuntu" {
        set gfxpayload=keep
        linux    /casper/vmlinuz  file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash --
        initrd    /casper/initrd.lz
    }
    menuentry "Check disc for defects" {
        set gfxpayload=keep
        linux    /casper/vmlinuz  boot=casper integrity-check quiet splash --
        initrd    /casper/initrd.lz
    }
    --------------------------------------------------------------------------------
    
    ========================= sdb1/syslinux/syslinux.cfg: ==========================
    
    --------------------------------------------------------------------------------
    # D-I config version 2.0
    include menu.cfg
    default vesamenu.c32
    prompt 0
    timeout 50
    
    # If you would like to use the new menu and be presented with the option to install or run from USB at startup, remove # from the following line. This line was commented out (by request of many) to allow the old menu to be presented and to enable booting straight into the Live Environment! 
    # ui gfxboot bootlogo
    --------------------------------------------------------------------------------
    
    =================== sdb1: Location of files loaded by Grub: ====================
    
               GiB - GB             File                                 Fragment(s)
    
                ?? = ??             boot/grub/grub.cfg                             1
    
    ================= sdb1: Location of files loaded by Syslinux: ==================
    
               GiB - GB             File                                 Fragment(s)
    
                ?? = ??             ldlinux.sys                                    1
                ?? = ??             syslinux/chain.c32                             1
                ?? = ??             syslinux/gfxboot.c32                           1
                ?? = ??             syslinux/syslinux.cfg                          1
                ?? = ??             syslinux/vesamenu.c32                          1
    
    ============== sdb1: Version of COM32(R) files used by Syslinux: ===============
    
     syslinux/chain.c32                 :  COM32R module (v4.xx)
     syslinux/gfxboot.c32               :  COM32R module (v4.xx)
     syslinux/vesamenu.c32              :  COM32R module (v4.xx)
    
    =============================== StdErr Messages: ===============================
    
    xz: (stdin): Compressed data is corrupt
    I can give you more feedback about my config if you tell me what to do. (and probably only tomorrow because I'm going to bed now!)

  7. #7
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
    Beans
    Hidden!
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: dual boot but grub not installed in MBR

    For whatever reason you are getting grub-efi, not the grub2 or grub-pc.

    Because you do not have the efi partition nor booting with UEFI grub-efi will not correctly install. It really seems like a bug that it is not correctly identifying UEFI or are you not selecting the BIOS/AHCI/legacy version. It has to be installing the efi version to have grub-efi.

    I install with BIOS but gpt partitions with an extra bios_grub partition. And I have grub-pc

    Code:
    fred@fred-Precise:~$ dpkg --get-selections | grep grub
    grub-common                    install
    grub-gfxpayload-lists                install
    grub-pc                        install
    grub-pc-bin                    install
    grub-rescue-pc                    install
    grub2-common                    install
    For info on UEFI boot install & repair:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.




  8. #8
    Join Date
    Jan 2008
    Location
    France
    Beans
    Hidden!
    Distro
    Ubuntu Development Release

    Arrow Re: dual boot but grub not installed in MBR

    Hello
    This is a severe bug that we should report to GRUB devs.

    @mme oscar: Please could you create a bug report here (https://bugs.launchpad.net/ubuntu/+s...quity/+filebug), with
    * title "Ubiquity installs grub-efi on non-GPT disk"
    * description : description of the problem + link to this thread + your full BootInfo URL (created from your Ubuntu CD)
    * attached files: /var/log/installer/syslog and /var/log/installer/partman files which are in your installed Ubuntu.

    Then indicate the link to your report here so that we follow it. Thanks!

  9. #9
    Join Date
    Jun 2011
    Beans
    21
    Distro
    Ubuntu

    Re: dual boot but grub not installed in MBR

    Quote Originally Posted by YannBuntu View Post
    Hello
    This is a severe bug that we should report to GRUB devs.

    @mme oscar: Please could you create a bug report here (https://bugs.launchpad.net/ubuntu/+s...quity/+filebug), with
    * title "Ubiquity installs grub-efi on non-GPT disk"
    * description : description of the problem + link to this thread + your full BootInfo URL (created from your Ubuntu CD)
    * attached files: /var/log/installer/syslog and /var/log/installer/partman files which are in your installed Ubuntu.

    Then indicate the link to your report here so that we follow it. Thanks!
    Done, the bug report is at
    https://bugs.launchpad.net/ubuntu/+s...y/+bug/1026616

    don't know if I should mark this thread as solved now?

  10. #10
    Join Date
    Nov 2009
    Location
    Segur De Calafell, Spain
    Beans
    11,660
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: dual boot but grub not installed in MBR

    Make sure you are not booting the cd/usb in uefi mode. Newer boards with uefi options seem to have all boot devices twice, a "standard" bios mode version and uefi version.

    The ubuntu cd/usb can be booted as both, so if in the boot devices list cd-rom (uefi) is before cd-rom (normal), it will boot it in uefi mode in which case it will try to install grub-efi (and it seems it successfully is).
    But since you are not using uefi boot and have no uefi system partition, you can't boot like that, it's incomplete.
    Darko.
    -----------------------------------------------------------------------
    Ubuntu 12.04 LTS 64bit & Windows 7 Ultimate 64bit

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