Grub boot loader: Difference between revisions

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A typical basic /boot/grub/menu.lst
A typical basic /boot/grub/menu.lst


default        0
default        0
timeout        5
timeout        5
color cyan/blue white/blue
color cyan/blue white/blue


title          Debian GNU/Linux, kernel 2.6.26-2-amd64
title          Debian GNU/Linux, kernel 2.6.26-2-amd64
root            (hd0,0)
root            (hd0,0)
kernel          /vmlinuz-2.6.26-2-amd64 root=/dev/mapper/tripenclosure-root ro q                                          uiet
 
kernel          /vmlinuz-2.6.26-2-amd64 root=/dev/mapper/tripenclosure-root ro quiet
 
initrd          /initrd.img-2.6.26-2-amd64
initrd          /initrd.img-2.6.26-2-amd64


title          Debian GNU/Linux, kernel 2.6.26-2-amd64 (single-user mode)
title          Debian GNU/Linux, kernel 2.6.26-2-amd64 (single-user mode)
root            (hd0,0)
root            (hd0,0)
kernel          /vmlinuz-2.6.26-2-amd64 root=/dev/mapper/tripenclosure-root ro s                                          ingle
 
kernel          /vmlinuz-2.6.26-2-amd64 root=/dev/mapper/tripenclosure-root ro single
 
initrd          /initrd.img-2.6.26-2-amd64
initrd          /initrd.img-2.6.26-2-amd64

Revision as of 09:52, 4 June 2010

To install grub do

>> apt-get install grub

Then to activate grub on the MBR do

>> grub-install /dev/hdXX #(device where to put the bootloader - generally the / partition if you run mount)

To create the /boot/grub/menu.lst you do

>> update-grub

around the top is the line

default 0

This sets the option that will be run by default (starts at 0 and goes up). Look at the options and see which one will be run - it seems to want to put 2.4 kernels ahead of 2.6 kernels!

Then you run grub

This puts you in the grub menu.

In the grub menu do:

grub> root (hd0,0)

grub> setup (hd0)

Then reboot and see how it went!


To put grub on a new HD, first create a grub boot floppy with


grub-floppy


then reboot into the grub floppy.


In the grub menu do:

grub> root (hd0,0)

grub> setup (hd0)


and then reboot!


A typical basic /boot/grub/menu.lst


default 0

timeout 5

color cyan/blue white/blue


title Debian GNU/Linux, kernel 2.6.26-2-amd64

root (hd0,0)

kernel /vmlinuz-2.6.26-2-amd64 root=/dev/mapper/tripenclosure-root ro quiet

initrd /initrd.img-2.6.26-2-amd64


title Debian GNU/Linux, kernel 2.6.26-2-amd64 (single-user mode)

root (hd0,0)

kernel /vmlinuz-2.6.26-2-amd64 root=/dev/mapper/tripenclosure-root ro single

initrd /initrd.img-2.6.26-2-amd64