I have a dual-boot Ubuntu/Windows machine and I wanted to create a script to change the menu.lst file so it will change the default boot partition (this is so I can reload the machine remotely and allow it to boot to the Windows partition).
Today I have to sudo cp a template file I created changing the default boot, but wanted to have something simpler.
Also I wanted to change only the default line of the actual menu.lst instead of relying on a template so if there are any changes to the running menu.lst I do not overwrite them.
Any thoughts?
---------- Post updated at 04:02 PM ---------- Previous update was at 04:00 PM ----------
for simplicity's sake...
I want to look into the menu.lst file for a line containing:
and change it to:
considering that menu.lst is a protected file and you need root to change it...
Hi all,
I would like to have some details on menu.lst!!
the reason is ,if i am trying to add my own boot option where do i need to add it?
is it in menu.lst only or elsewere(am referring to unix os)
because i tried adding a unique boot option and it was not reflected when the system booted?... (8 Replies)
I am trying to install three OS (Windows VISTA, OpenSUSE 11.3 & Solaris 11 Express) on a single drive of a laptop. However when I go to edit the /rpool/boot/grub/menu.lst to put the entry so it can boot the OpenSUSE 11.3 I get errors some of which result into starting all over again. I have also... (0 Replies)
I have partitioned and installed Windows Vista, OpenSUSE and Solaris 11 Express on a LapTop hardDrive. However I am not able to boot OpenSUSE 11.3 although I have it in menu.lst which I put in a Solaris partition directory /rpool/boot/grub. Could someone tell me how to go about it. See what I did... (2 Replies)
I am trying to write a small backup application for Linux systems file by file if partitions are created by the user using fdisk. I am facing a problem when I am done with restoring the files. The problem is with UUID mismatch in restored fstab and menu.lst.
Using C I could create a partlist.txt... (6 Replies)
Hi guys.
I have installed Acronis disk director in windows XP and allocate some free space to install Debian beside fedora.
after completion i rebooted and now grub is in command line mode and does not show the menu list.
(I didn't remove the fedora partition. I just allocate some space from... (1 Reply)
Hi there,
I had a double boot of Windows 7 and Ubuntu 10.04. After messing up with UBUNTU I reinstalled it. But then Grub did not noticed the existence of my windows and it just boot into linux. I booted with windows 7 installation CD which noticed a problem with my booting and suggest to repair... (2 Replies)
I am trying to install three OS (Windows VISTA, OpenSUSE 11.3 & Solaris 11 Express) on a single drive of a laptop. However when I go to edit the /rpool/boot/grub/menu.lst to put the entry so it can boot the OpenSUSE 11.3 I get errors some of which result into starting all over again. I have also... (3 Replies)
I am not able to find menu.lst in /boot.
During the Linux Kernel Compilation I installed the kernel using make install.
Next I created an initrd image.
I had to modify the Grub configuration file - /boot/grub/menu.lst which I am not able to find.
Any resolution for the issue? (3 Replies)
The quick & dirty question I have is... What app/script actually loads the Grub 2 menu system? And where is it located?
The longer question is I understand the core.img is loaded onto the first 63 sectors (stage 1.5) and after it loads I starts the stage 2 Grub bootloader which loads the Menu... (0 Replies)
Discussion started by: bodisha
0 Replies
LEARN ABOUT DEBIAN
update-grub
update-grub(8) System Manager's Manual update-grub(8)NAME
update-grub - program to generate GRUB's menu.lst file
SYNOPSIS
update-grub
DESCRIPTION
update-grub is a program used to generate the menu.lst file used by the grub bootloader. It works by looking in /boot for all files which
start with "vmlinuz-". They will be treated as kernels, and grub menu entries will be created for each. It will also create the initial
menu.lst if none exists, after prompting the user. It will also add initrd lines for ramdisk images found with the same version as kernels
found. e.g. /boot/vmlinuz-2.4.5 and /boot/initrd-2.4.5 will cause a line of "initrd=/boot/initrd-2.4.5 or similar to be added for the ker-
nel entry in the menu.lst.
After update-grub has been run for the first time, the user is required to edit the generated menu.lst. The user must set the two options
update-grub uses. Then re-run the update-grub script to update the menu.lst file using the default's that have been set.
These are the options passed to the linux kernel:
# kopt=root=/dev/hda1 ro
Everything after "kopt=" is passed to the kernel as parameters. See bootparam(7) for more information.
This is the grub device from which grub loads the kernel:
# groot=(hd0,1)
(hd0,1) is a partition in grub notation. See grub(8) for more information.
This option controls if grub should create the alternative boot options in the menu entries
# alternative=true
# alternative=false
This option controls if grub should lock the alternative boot options see grub(8) for more information.
# lockalternative=true
# lockalternative=false
This option controls if grub should lock the old kernels.
# lockold=true
# lockold=false
This options controls what is used for the alternative boot options, multiple altoptions lines are allowed.
# altoptions=(some description) some kernel command line options
# altoptions=(recovery option) single
The description is placed in '()' and the kernel command line options follow that.
# updatedefault=true
# updatedefault=false
This option controls if grub should update the default entry to keep booting the same kernel even if a new one is installed.
The update-grub script can be ran automagically from the /etc/kernel-img.conf file by adding the following lines:
postinst_hook = update-grub
postrm_hook = update-grub
do_bootloader = no
For further information related to /etc/kernel-img.conf, see the manpage kernel-img.conf(5).
SEE ALSO grub(8), grub-install(8), kernel-img.conf(5) (contained in the kernel-package package), bootparam(7).
The full documentation for grub is maintained as a Texinfo manual in the grub-legacy-doc package. If the info and grub programs are prop-
erly installed at your site, the command
info grub
should give you access to the complete manual.
AUTHOR
This manual page was written by Jason Thomas <jason@debian.org>, for the Debian GNU/Linux system (but may be used by others).
Jason Thomas June 18, 2001 update-grub(8)