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Old 07-10-2011, 02:45 AM   #1
ankit_k
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Registered: Jul 2011
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Smile windows 7 not detected by grub


i'm currently using ubuntu10.10(/dev/sda10) and win 7 is installed on /dev/sda1.

during installation of ubuntu bootloader failed to install.so i had to do it manually later.but now the problem is that is does not recognise my win7 os.

i have tried many different suggestions given on this and many other forums but none worked.i even tried going back to grub(legacy) but that to didn't help.editing the menu.lst didn't work nor did the sudo update-grub did.

i also used the boot_info_script.it detects my win7 partition.if u want i'll attach it here.

please help,
thanks
 
Old 07-10-2011, 02:58 AM   #2
EDDY1
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It's always helpful to post as much as you can are you running grub or grub2?


Grub2
as user
Quote:
sudo update-grub
or root
Quote:
update-grub
 
Old 07-10-2011, 03:13 AM   #3
ankit_k
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the update grub command was running properly,but it didn't detect my win7
and currently using grub2 and the result.txt was when grub(legacy) was active


and here is my result.txt

Code:
                  Boot Info Script 0.60    from 17 May 2011


============================= Boot Info Summary: ===============================

 => Grub2 (v1.97-1.98) 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 in partition 10 for (,msdos10)/boot/grub.

sda1: __________________________________________________________________________

    File system:       ntfs
    Boot sector type:  Windows Vista/7
    Boot sector info:   No errors found in the Boot Parameter Block.
    Operating System:  Windows 7
    Boot files:        /Windows/System32/winload.exe

sda2: __________________________________________________________________________

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

sda5: __________________________________________________________________________

    File system:       ntfs
    Boot sector type:  Windows XP
    Boot sector info:   According to the info in the boot sector, sda5 starts 
                       at sector 63.
    Operating System:  
    Boot files:        

sda6: __________________________________________________________________________

    File system:       ntfs
    Boot sector type:  Windows XP
    Boot sector info:   According to the info in the boot sector, sda6 starts 
                       at sector 63.
    Operating System:  
    Boot files:        

sda7: __________________________________________________________________________

    File system:       ntfs
    Boot sector type:  Windows XP
    Boot sector info:   According to the info in the boot sector, sda7 starts 
                       at sector 63.
    Operating System:  
    Boot files:        

sda8: __________________________________________________________________________

    File system:       ntfs
    Boot sector type:  Windows XP
    Boot sector info:   According to the info in the boot sector, sda8 starts 
                       at sector 63.
    Operating System:  
    Boot files:        

sda9: __________________________________________________________________________

    File system:       ntfs
    Boot sector type:  Windows Vista/7
    Boot sector info:   According to the info in the boot sector, sda9 starts 
                       at sector 1834. But according to the info from fdisk, 
                       sda9 starts at sector 873263104.
    Operating System:  
    Boot files:        

sda10: _________________________________________________________________________

    File system:       ext4
    Boot sector type:  -
    Boot sector info:  
    Operating System:  Ubuntu 10.10
    Boot files:        /boot/grub/menu.lst /boot/grub/grub.cfg /etc/fstab 
                       /boot/grub/core.img

sda11: _________________________________________________________________________

    File system:       swap
    Boot sector type:  -
    Boot sector info:  

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

Drive: sda _____________________________________________________________________

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 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    *             63   104,856,254   104,856,192   7 NTFS / exFAT / HPFS
/dev/sda2         104,856,316   976,771,071   871,914,756   f W95 Extended (LBA)
/dev/sda5         104,856,318   314,568,764   209,712,447   7 NTFS / exFAT / HPFS
/dev/sda6         314,568,828   524,281,274   209,712,447   7 NTFS / exFAT / HPFS
/dev/sda7         524,281,338   733,993,784   209,712,447   7 NTFS / exFAT / HPFS
/dev/sda8         733,993,848   873,261,269   139,267,422   7 NTFS / exFAT / HPFS
/dev/sda9         873,263,104   924,610,559    51,347,456   7 NTFS / exFAT / HPFS
/dev/sda10        924,612,608   976,367,615    51,755,008  83 Linux
/dev/sda11        976,369,664   976,771,071       401,408  82 Linux swap / Solaris


"blkid" output: ________________________________________________________________

Device           UUID                                   TYPE       LABEL

/dev/sda1        8A727F67727F5743                       ntfs       
/dev/sda10       16a7f5c1-9642-4553-8924-998f942f3045   ext4       
/dev/sda11       ee466fe1-8779-40d8-b6f0-323adefa80f3   swap       
/dev/sda5        0090378A90378566                       ntfs       
/dev/sda6        EE4C3F8C4C3F4E99                       ntfs       
/dev/sda7        52A847BAA8479AFD                       ntfs       
/dev/sda8        E8A04F4AA04F1F06                       ntfs       
/dev/sda9        9A2206B322069503                       ntfs       

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

Device           Mount_Point              Type       Options

/dev/sda10       /                        ext4       (rw,errors=remount-ro,commit=0)


========================== sda10/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-legacy-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		3

## 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=16a7f5c1-9642-4553-8924-998f942f3045 ro

## default grub root device
## e.g. groot=(hd0,0)
# groot=16a7f5c1-9642-4553-8924-998f942f3045

## 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

## specify if running in Xen domU or have grub detect automatically
## update-grub will ignore non-xen kernels when running in domU and vice versa
## e.g. indomU=detect
##      indomU=true
##      indomU=false
# indomU=detect

## 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 10.10, kernel 2.6.35-22-generic
uuid		16a7f5c1-9642-4553-8924-998f942f3045
kernel		/boot/vmlinuz-2.6.35-22-generic root=UUID=16a7f5c1-9642-4553-8924-998f942f3045 ro quiet splash
initrd		/boot/initrd.img-2.6.35-22-generic

title		Ubuntu 10.10, kernel 2.6.35-22-generic (recovery mode)
uuid		16a7f5c1-9642-4553-8924-998f942f3045
kernel		/boot/vmlinuz-2.6.35-22-generic root=UUID=16a7f5c1-9642-4553-8924-998f942f3045 ro single
initrd		/boot/initrd.img-2.6.35-22-generic

title		Ubuntu 10.10, memtest86+
uuid		16a7f5c1-9642-4553-8924-998f942f3045
kernel		/boot/memtest86+.bin

title Windows 7
root (hd0,0)
chainloader +1

### END DEBIAN AUTOMAGIC KERNELS LIST
--------------------------------------------------------------------------------

========================== sda10/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 ###
insmod part_msdos
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 part_msdos
insmod ext2
set root='(hd0,msdos10)'
search --no-floppy --fs-uuid --set 16a7f5c1-9642-4553-8924-998f942f3045
if loadfont /usr/share/grub/unicode.pf2 ; then
  set gfxmode=640x480
  load_video
  insmod gfxterm
fi
terminal_output gfxterm
insmod part_msdos
insmod ext2
set root='(hd0,msdos10)'
search --no-floppy --fs-uuid --set 16a7f5c1-9642-4553-8924-998f942f3045
set locale_dir=($root)/boot/grub/locale
set lang=en
insmod gettext
if [ "${recordfail}" = 1 ]; then
  set timeout=-1
else
  set timeout=-1
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
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
menuentry 'Ubuntu, with Linux 2.6.35-22-generic' --class ubuntu --class gnu-linux --class gnu --class os {
	recordfail
	insmod part_msdos
	insmod ext2
	set root='(hd0,msdos10)'
	search --no-floppy --fs-uuid --set 16a7f5c1-9642-4553-8924-998f942f3045
	linux	/boot/vmlinuz-2.6.35-22-generic root=UUID=16a7f5c1-9642-4553-8924-998f942f3045 ro   quiet splash
	initrd	/boot/initrd.img-2.6.35-22-generic
}
menuentry 'Ubuntu, with Linux 2.6.35-22-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
	recordfail
	insmod part_msdos
	insmod ext2
	set root='(hd0,msdos10)'
	search --no-floppy --fs-uuid --set 16a7f5c1-9642-4553-8924-998f942f3045
	echo	'Loading Linux 2.6.35-22-generic ...'
	linux	/boot/vmlinuz-2.6.35-22-generic root=UUID=16a7f5c1-9642-4553-8924-998f942f3045 ro single 
	echo	'Loading initial ramdisk ...'
	initrd	/boot/initrd.img-2.6.35-22-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,msdos10)'
	search --no-floppy --fs-uuid --set 16a7f5c1-9642-4553-8924-998f942f3045
	linux16	/boot/memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
	insmod part_msdos
	insmod ext2
	set root='(hd0,msdos10)'
	search --no-floppy --fs-uuid --set 16a7f5c1-9642-4553-8924-998f942f3045
	linux16	/boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###

### BEGIN /etc/grub.d/30_os-prober ###
### 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 ###
--------------------------------------------------------------------------------

=============================== sda10/etc/fstab: ===============================

--------------------------------------------------------------------------------
# /etc/fstab: static file system information.
#
# Use 'blkid -o value -s UUID' 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/sda10 during installation
UUID=16a7f5c1-9642-4553-8924-998f942f3045 /               ext4    errors=remount-ro 0       1
# swap was on /dev/sda11 during installation
UUID=ee466fe1-8779-40d8-b6f0-323adefa80f3 none            swap    sw              0       0
/dev/fd0        /media/floppy0  auto    rw,user,noauto,exec,utf8 0       0
--------------------------------------------------------------------------------

=================== sda10: Location of files loaded by Grub: ===================

           GiB - GB             File                                 Fragment(s)

 459.535930634 = 493.422948352  boot/grub/core.img                             1
 449.044345856 = 482.157694976  boot/grub/grub.cfg                             1
 463.298789978 = 497.463287808  boot/grub/menu.lst                             1
 463.342773438 = 497.510514688  boot/initrd.img-2.6.35-22-generic              2
 459.526264191 = 493.412569088  boot/vmlinuz-2.6.35-22-generic                 1
 463.342773438 = 497.510514688  initrd.img                                     2
 459.526264191 = 493.412569088  vmlinuz                                        1
 
Old 07-10-2011, 03:54 AM   #4
EDDY1
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Now that you have grub2 are you able to boot winsxp?
Wins7 recovery & boot are on sda1 it's possible you may have overwritten, even though there is anote saying that it's not.
 
Old 07-10-2011, 04:14 AM   #5
ankit_k
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Registered: Jul 2011
Posts: 3

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no i have tried with both versions of grub many times...but none work.
what should be done now?
 
Old 07-10-2011, 12:30 PM   #6
yancek
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The results.txt file you posted shows Grub2 in the mbr. The Grub2 grub.cfg file has no entry for windows. I don't know why the sudo os-prober and sudo update-grub commands didn't work. You might try running them again and posting the output. Someone may have an idea.
 
Old 07-10-2011, 07:16 PM   #7
EDDY1
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Quote:
i'm currently using ubuntu10.10(/dev/sda10) and win 7 is installed on /dev/sda1.

during installation of ubuntu bootloader failed to install.
Grub may have originally failed to install because it is beyond 128G of the drive.
 
Old 07-11-2011, 01:02 AM   #8
bsat
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Did you try adding the entry manually in the 40_custom file.
Now that you know the partition on which windows is installed try adding the entry to 40_custom and update the grub, might work.
 
Old 07-11-2011, 03:51 PM   #9
baxzius
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Cool!

To reinstall grub to MBR. Boot using Live CD. Then
Code:
sudo mkdir /media/sda5
sudo mount /dev/sda5 /media/sda5
sudo grub-install --root-directory=/media/sda5 /dev/sda


Edit: added update-grub to get Win7 in the menu

sudo update-grub
Although the last update-grub command had to be done inside Ubuntu itself as it would not work on the live cd.

Last edited by baxzius; 07-11-2011 at 03:52 PM.
 
  


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