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Boyo17
May 18th, 2012, 03:04 AM
I just installed Ubuntu 12.04, and it asked me to restart the computer after removing the install DVD. But when the computer rebooted, it booted straight to Windows.

From what I've read, I may need to reinstall grub, but I'm not sure how to go about that.

Here are the results from bootinfoscript, in case that is relevant:


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:
Boot files: /bootmgr /Boot/BCD

sda2: __________________________________________________ ________________________

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: /Windows/System32/winload.exe

sda3: __________________________________________________ ________________________

File system: Extended Partition
Boot sector type: -
Boot sector info:

sda5: __________________________________________________ ________________________

File system: ntfs
Boot sector type: Windows Vista/7: NTFS
Boot sector info: According to the info in the boot sector, sda5 starts
at sector 2048.
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: swap
Boot sector type: -
Boot sector info:

sda4: __________________________________________________ ________________________

File system: ntfs
Boot sector type: Windows Vista/7: NTFS
Boot sector info: According to the info in the boot sector, sda4 has
30722047 sectors, but according to the info from
fdisk, it has 30926575 sectors.
Operating System:
Boot files: /bootmgr /boot/bcd

============================ Drive/Partition Info: =============================

Drive: sda __________________________________________________ ___________________

Disk /dev/sda: 750.2 GB, 750156374016 bytes
255 heads, 63 sectors/track, 91201 cylinders, total 1465149168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes

Partition Boot Start Sector End Sector # of Sectors Id System

/dev/sda1 * 2,048 411,647 409,600 7 NTFS / exFAT / HPFS
/dev/sda2 411,648 1,341,943,807 1,341,532,160 7 NTFS / exFAT / HPFS
/dev/sda3 1,341,945,854 1,434,222,591 92,276,738 f W95 Extended (LBA)
/dev/sda5 1,373,403,136 1,434,222,591 60,819,456 7 NTFS / exFAT / HPFS
/dev/sda6 1,341,945,856 1,356,804,095 14,858,240 83 Linux
/dev/sda7 1,356,806,144 1,373,403,135 16,596,992 82 Linux swap / Solaris
/dev/sda4 1,434,222,592 1,465,149,167 30,926,576 12 Compaq diagnostics


"blkid" output: __________________________________________________ ______________

Device UUID TYPE LABEL

/dev/loop0 squashfs
/dev/sda1 589C16619C163A48 ntfs
/dev/sda2 2E6A15866A154C49 ntfs
/dev/sda4 8E0C55AE0C5591D7 ntfs LENOVO_PART
/dev/sda5 18F00B9CF00B7F6E ntfs LENOVO
/dev/sda6 dcaac0fd-79a3-4385-9a13-d5adfe141aeb ext4
/dev/sda7 5d023e03-4784-4c33-8a8f-3f540833c55d swap
/dev/sr0 iso9660 Ubuntu 12.04 LTS amd64

================================ Mount points: =================================

Device Mount_Point Type Options

/dev/loop0 /rofs squashfs (ro,noatime)
/dev/sda6 /media/dcaac0fd-79a3-4385-9a13-d5adfe141aeb ext4 (rw,nosuid,nodev,uhelper=udisks)
/dev/sr0 /cdrom iso9660 (ro,noatime)


=========================== 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 dcaac0fd-79a3-4385-9a13-d5adfe141aeb
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 dcaac0fd-79a3-4385-9a13-d5adfe141aeb
set locale_dir=($root)/boot/grub/locale
set lang=en_US
insmod gettext
fi
terminal_output gfxterm
if [ "${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 dcaac0fd-79a3-4385-9a13-d5adfe141aeb
linux /boot/vmlinuz-3.2.0-23-generic root=UUID=dcaac0fd-79a3-4385-9a13-d5adfe141aeb 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 dcaac0fd-79a3-4385-9a13-d5adfe141aeb
echo 'Loading Linux 3.2.0-23-generic ...'
linux /boot/vmlinuz-3.2.0-23-generic root=UUID=dcaac0fd-79a3-4385-9a13-d5adfe141aeb 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 dcaac0fd-79a3-4385-9a13-d5adfe141aeb
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 dcaac0fd-79a3-4385-9a13-d5adfe141aeb
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 589C16619C163A48
chainloader +1
}
menuentry "Windows Recovery Environment (loader) (on /dev/sda4)" --class windows --class os {
insmod part_msdos
insmod ntfs
set root='(hd0,msdos4)'
search --no-floppy --fs-uuid --set=root 8E0C55AE0C5591D7
drivemap -s (hd0) ${root}
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=dcaac0fd-79a3-4385-9a13-d5adfe141aeb / ext4 errors=remount-ro 0 1
# swap was on /dev/sda7 during installation
UUID=5d023e03-4784-4c33-8a8f-3f540833c55d none swap sw 0 0
--------------------------------------------------------------------------------

=================== sda6: Location of files loaded by Grub: ====================

GiB - GB File Fragment(s)

= boot/grub/grub.cfg 1
= boot/initrd.img-3.2.0-23-generic 2
= boot/vmlinuz-3.2.0-23-generic 1
= initrd.img 2
= vmlinuz 1

========= Devices which don't seem to have a corresponding hard drive: =========

sdb

=============================== StdErr Messages: ===============================

awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in


Thanks!

wilee-nilee
May 18th, 2012, 04:36 AM
So this should be fixable but you are missing this file in the ubuntu install.


/boot/grub/core.imgSo this needs a chroot to fix, a chroot is accessing the Ubuntu install from a live cd. Then a purge and reinstall of grub is done in this situation. This can be done with a app called boot-repair.

So there is a boot-repair cd you can download, or you can boot a live ubuntu cd and download it to be used in the session. Here is the boot repair link.
https://help.ubuntu.com/community/Boot-Repair

Here is picture of the boot-repair in the advanced section you will click on the purge grub top box to do this. You will then be given commands to run in the terminal just follow the directions.
218187

I could also just give you commands to run in the booted live cd to run and do the same thing, your choice let the thread know, I will be on for awhile.

Boyo17
May 18th, 2012, 03:34 PM
Thanks for the tip. I'll try out the BootRepair utility in a LiveCD session.

Could this have anything to do with the fact that the hard drive now has 6 partitions? I read somewhere that a hard drive should only have four, but I'm not sure why.

darkod
May 18th, 2012, 03:39 PM
No, it has nothing to do with it.

A hdd that has msdos partition table (the most common type) can only have 4 primary partitions or 3 primary and 1 extended.

The extended partition can contain many logical partitions. That's how you can have more than 4.

If you look carefully, you will see that sda3 is extended partition and sda5-7 are logical partitions inside it. So everything is fine, by the rules.

Linux assigns partition numbers 1-4 to primary partitions, and 5+ to logical.

That's why you can have for example sda1, sda2, sda5 and sda6. That doesn't mean you have partitions missing, it only means for example #2 is the extended and #5 and #6 are the logical partitions inside it. Because they are logical, their number is 5 or higher, not 3 or 4.

Boyo17
May 18th, 2012, 04:13 PM
Thanks for the explanation!

drs305
May 18th, 2012, 04:18 PM
As was mentioned, Grub isn't fully installed. It wasn't written to the MBR so it points to your Ubuntu partition.

You can boot the LiveCD, install Boot Repair in the TryIt mode of the CD, and it should fix things. Boot Repair will be your simplest option.

See the link in my signature line.

Boyo17
May 18th, 2012, 04:36 PM
I'm working through Boot-Repair, but I have no idea which partition to install grub to. The tool does not make any suggestion. I've attached a screenshot of the prompt that is confusing me.

darkod
May 18th, 2012, 04:38 PM
The MBR of the disk, /dev/sda. The first choice.

Not a partition.

You select/deselect with Space.

wilee-nilee
May 18th, 2012, 08:46 PM
Thanks drs305 and darkod, in trying to get orientated with advising this tool and trying to make sure users understand I left out the sda load when asked on a purge, Doh.

OP their posts are correct I know cause I learned all this from them, lol, hope you get this all fixed let us know. :)

I'm barely worthy.