How to make sure that grub does use menu.lst?
- by Glen S. Dalton
On my Ubuntu 9.04 ("Karmic") laptop I suspect grub does not use the /boot/grub/menu.lst file.
What happens on boot is that I see a blank screen and nothing happens. When I press ESC I see a boot list which is different from what I would expect from the menu.lst file. The menu lines are different and when I choose the first entry it does not use the kernel options that are in the first entry in menu.lst.
Where do the entries that grub uses come from? How can I find out what happens, is there a log? I could not find anything in /var/log/syslog or /var/log/dmesg about grub using a menu.lst.
How can I set it to work like expected? Some Files:
$ sudo ls -la /boot/grub/*lst
-rw-r--r-- 1 root root 1558 2009-12-12 15:25 /boot/grub/command.lst
-rw-r--r-- 1 root root 121 2009-12-12 15:25 /boot/grub/fs.lst
-rw-r--r-- 1 root root 272 2009-12-12 15:25 /boot/grub/handler.lst
-rw-r--r-- 1 root root 4576 2010-03-19 11:26 /boot/grub/menu.lst
-rw-r--r-- 1 root root 1657 2009-12-12 15:25 /boot/grub/moddep.lst
-rw-r--r-- 1 root root 62 2009-12-12 15:25 /boot/grub/partmap.lst
-rw-r--r-- 1 root root 22 2009-12-12 15:25 /boot/grub/parttool.lst
$ sudo ls -la /vm*
lrwxrwxrwx 1 root root 30 2009-12-12 16:15 /vmlinuz -> boot/vmlinuz-2.6.31-16-generic
lrwxrwxrwx 1 root root 30 2009-12-12 14:07 /vmlinuz.old -> boot/vmlinuz-2.6.31-14-generic
$ sudo ls -la /init*
lrwxrwxrwx 1 root root 33 2009-12-12 16:15 /initrd.img -> boot/initrd.img-2.6.31-16-generic
lrwxrwxrwx 1 root root 33 2009-12-12 14:07 /initrd.img.old -> boot/initrd.img-2.6.31-14-generic
The only menu.lst that I found:
$ sudo find / -name "menu.lst"
/boot/grub/menu.lst
$ sudo cat /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-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=9b454298-18e1-43f7-a5bc-f56e7ed5f9c6 ro noresume
## default grub root device
## e.g. groot=(hd0,0)
# groot=70fcd2b0-0ee0-4fe6-9acb-322ef74c1cdf
## 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
# defoptions=apm=on acpi=off
## 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 9.10, kernel 2.6.31-14-generic noresume
uuid 70fcd2b0-0ee0-4fe6-9acb-322ef74c1cdf
kernel /vmlinuz-2.6.31-14-generic root=UUID=9b454298-18e1-43f7-a5bc-f56e7ed5f9c6 ro quiet
splash apm=on acpi=off noresume
initrd /initrd.img-2.6.31-14-generic
title Ubuntu 9.10, kernel 2.6.31-14-generic (recovery mode)
uuid 70fcd2b0-0ee0-4fe6-9acb-322ef74c1cdf
kernel /vmlinuz-2.6.31-14-generic root=UUID=9b454298-18e1-43f7-a5bc-f56e7ed5f9c6 ro sing
le
initrd /initrd.img-2.6.31-14-generic
title Ubuntu 9.10, memtest86+
uuid 70fcd2b0-0ee0-4fe6-9acb-322ef74c1cdf
kernel /memtest86+.bin
### END DEBIAN AUTOMAGIC KERNELS LIST
These are the choices that grub displays after i press ESC:
Ubuntu, Linux 2-6-31-16-generic
Ubuntu, Linux 2-6-31-16-generic (recovery mode)
Ubuntu, Linux 2-6-31-14-generic
Ubuntu, Linux 2-6-31-14-generic (recovery mode)
Memory test (memtest86+)
Memory test (memtest86+, serial console 115200)
