SilverWave
November 7th, 2009, 10:47 PM
GRUB 2 is the default boot loader for Ubuntu 9.10 Karmic.
So before installing you may want to brush up your GRUB skills by taking the 60 second tour below :)
Note:
====
If the menu is hidden at bootup "shift" will show it (not esc).
In GRUB 2 there is no menu.lst
GRUB 2 counts the first drive as 0, the first partition as 1.
e.g: If the Ubuntu system is on sda5, enter: set root=(hd0,5)
The StartUp-Manager gui package works with GRUB 2
Important files and locations
==================
/etc/grub.d/
Scripts that "sudo update-grub" runs in order to recreate /boot/grub/grub.cfg
/etc/grub.d/40_custom
Put your stuff in here if needed.
/etc/default/grub
GRUB 2 Menu settings.
e.g.
GRUB_TIMEOUT="3"
After any changes run "sudo update-grub".
/boot/grub/grub.cfg
View only - not to be altered manually.
"sudo update-grub" runs the scripts in /etc/grub.d/ to rebuild this file.
An example menu item:
menuentry "Ubuntu, Linux 2.6.31-14-generic" {
recordfail=1
if [ -n ${have_grubenv} ]; then save_env recordfail; fi
set quiet=1
insmod ext2
set root=(hd0,5)
search --no-floppy --fs-uuid --set c73a37c8-ef7f-40e4-b9de-8b2f81038441
linux /boot/vmlinuz-2.6.31-14-generic root=UUID=c73a37c8-ef7f-40e4-b9de-8b2f81038441 ro quiet splash
initrd /boot/initrd.img-2.6.31-14-generic
}
Great howto by drs305 at: https://help.ubuntu.com/community/Grub2/
So before installing you may want to brush up your GRUB skills by taking the 60 second tour below :)
Note:
====
If the menu is hidden at bootup "shift" will show it (not esc).
In GRUB 2 there is no menu.lst
GRUB 2 counts the first drive as 0, the first partition as 1.
e.g: If the Ubuntu system is on sda5, enter: set root=(hd0,5)
The StartUp-Manager gui package works with GRUB 2
Important files and locations
==================
/etc/grub.d/
Scripts that "sudo update-grub" runs in order to recreate /boot/grub/grub.cfg
/etc/grub.d/40_custom
Put your stuff in here if needed.
/etc/default/grub
GRUB 2 Menu settings.
e.g.
GRUB_TIMEOUT="3"
After any changes run "sudo update-grub".
/boot/grub/grub.cfg
View only - not to be altered manually.
"sudo update-grub" runs the scripts in /etc/grub.d/ to rebuild this file.
An example menu item:
menuentry "Ubuntu, Linux 2.6.31-14-generic" {
recordfail=1
if [ -n ${have_grubenv} ]; then save_env recordfail; fi
set quiet=1
insmod ext2
set root=(hd0,5)
search --no-floppy --fs-uuid --set c73a37c8-ef7f-40e4-b9de-8b2f81038441
linux /boot/vmlinuz-2.6.31-14-generic root=UUID=c73a37c8-ef7f-40e4-b9de-8b2f81038441 ro quiet splash
initrd /boot/initrd.img-2.6.31-14-generic
}
Great howto by drs305 at: https://help.ubuntu.com/community/Grub2/