Re: [Hampshire] Problems changing boot order in Ubuntu

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Author: Robin Wilson
Date:  
To: Hampshire LUG Discussion List
Subject: Re: [Hampshire] Problems changing boot order in Ubuntu
I'm editing the /boot/grub/menu.lst file. The contents of that file is
as below. I've posted the whole file as there is a large commented
section called the Automagic Kernels list, which is confusing me a bit.

I had a search around and couldn't find any other files that looked like
they might be the right one. There was nothing of interest in /etc/grub.


# 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        5


## 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        (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=f2899c8f-abb1-47c6-86bf-ce9987485027 ro


## Setup crashdump menu entries
## e.g. crashdump=1
# crashdump=0

## default grub root device
## e.g. groot=(hd0,0)
# groot=(hd0,0)

## 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 8.04.1, kernel 2.6.24-21-generic
root        (hd0,0)
kernel        /boot/vmlinuz-2.6.24-21-generic 
root=UUID=f2899c8f-abb1-47c6-86bf-ce9987485027 ro quiet splash
initrd        /boot/initrd.img-2.6.24-21-generic
quiet


title        Ubuntu 8.04.1, kernel 2.6.24-21-generic (recovery mode)
root        (hd0,0)
kernel        /boot/vmlinuz-2.6.24-21-generic 
root=UUID=f2899c8f-abb1-47c6-86bf-ce9987485027 ro single
initrd        /boot/initrd.img-2.6.24-21-generic


title        Ubuntu 8.04.1, kernel 2.6.24-19-generic
root        (hd0,0)
kernel        /boot/vmlinuz-2.6.24-19-generic 
root=UUID=f2899c8f-abb1-47c6-86bf-ce9987485027 ro quiet splash
initrd        /boot/initrd.img-2.6.24-19-generic
quiet


title        Ubuntu 8.04.1, kernel 2.6.24-19-generic (recovery mode)
root        (hd0,0)
kernel        /boot/vmlinuz-2.6.24-19-generic 
root=UUID=f2899c8f-abb1-47c6-86bf-ce9987485027 ro single
initrd        /boot/initrd.img-2.6.24-19-generic


title        Ubuntu 8.04.1, memtest86+
root        (hd0,0)
kernel        /boot/memtest86+.bin
quiet


### END DEBIAN AUTOMAGIC KERNELS LIST

# This entry automatically added by the Debian installer for a non-linux OS
# on /dev/hda2
title        Microsoft Windows XP Home Edition
root        (hd0,1)
savedefault
makeactive
chainloader    +1


Cheers,

Robin


Keith Edmunds wrote:
> On Mon, 5 Jan 2009 16:40:24 +0000, r.t.wilson@??? said:
>
>> The strange thing is that I have been doing it as root. I've been using
>> sudo to run the editor command, and it's been saving it fine.
>
> If the stanza you removed is still being shown in the boot menu then it's
> likely that the file you are editing is not the file that grub is reading.
>
> Which file have you been editing? Can you post it here (strip the comments
> out first if you want)?
>
> Keith
>