Below is in the "menu.lst" file content in /boot/grub/ by using live cd. It happened since I upgraded from jaunty to karmic. And I did not "complete the upgrade command: upgrade-from-grub-legacy", then comes my problem. Nothing can be changed for this file (keyboard is disable by the live cd). What to do as to bring back the boot option.
splashimage (hd0,0)/boot/grub/splashimages/54496-napoleon.xpm.gz
default 0
timeout 10
### 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=7eafc764-da64-4a28-8042-752b9eb621fc ro
## default grub root device
## e.g. groot=(hd0,0)
# groot=7eafc764-da64-4a28-8042-752b9eb621fc
## 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 Chainload into GRUB 2
uuid 7eafc764-da64-4a28-8042-752b9eb621fc
kernel /boot/grub/core.img
title �������������������������������������������������� �������������������
root
title When you have verified GRUB 2 works, you can use this command to
root
title complete the upgrade: upgrade-from-grub-legacy
root
title �������������������������������������������������� �������������������
root
title Ubuntu 9.10, kernel 2.6.31-14-generic
uuid 7eafc764-da64-4a28-8042-752b9eb621fc
kernel /boot/vmlinuz-2.6.31-14-generic root=UUID=7eafc764-da64-4a28-8042-752b9eb621fc ro quiet splash
initrd /boot/initrd.img-2.6.31-14-generic
quiet
title Ubuntu 9.10, kernel 2.6.31-14-generic (recovery mode)
uuid 7eafc764-da64-4a28-8042-752b9eb621fc
kernel /boot/vmlinuz-2.6.31-14-generic root=UUID=7eafc764-da64-4a28-8042-752b9eb621fc ro single
initrd /boot/initrd.img-2.6.31-14-generic
title Ubuntu 9.10, kernel 2.6.28-11-generic
uuid 7eafc764-da64-4a28-8042-752b9eb621fc
kernel /boot/vmlinuz-2.6.28-11-generic root=UUID=7eafc764-da64-4a28-8042-752b9eb621fc ro quiet splash
initrd /boot/initrd.img-2.6.28-11-generic
quiet
title Ubuntu 9.10, kernel 2.6.28-11-generic (recovery mode)
uuid 7eafc764-da64-4a28-8042-752b9eb621fc
kernel /boot/vmlinuz-2.6.28-11-generic root=UUID=7eafc764-da64-4a28-8042-752b9eb621fc ro single
initrd /boot/initrd.img-2.6.28-11-generic
title Ubuntu 9.10, memtest86+
uuid 7eafc764-da64-4a28-8042-752b9eb621fc
kernel /boot/memtest86+.bin
quiet
### END DEBIAN AUTOMAGIC KERNELS LIST
splashimage (hd0,0)/boot/grub/splashimages/54496-napoleon.xpm.gz
default 0
timeout 10
### 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=7eafc764-da64-4a28-8042-752b9eb621fc ro
## default grub root device
## e.g. groot=(hd0,0)
# groot=7eafc764-da64-4a28-8042-752b9eb621fc
## 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 Chainload into GRUB 2
uuid 7eafc764-da64-4a28-8042-752b9eb621fc
kernel /boot/grub/core.img
title �������������������������������������������������� �������������������
root
title When you have verified GRUB 2 works, you can use this command to
root
title complete the upgrade: upgrade-from-grub-legacy
root
title �������������������������������������������������� �������������������
root
title Ubuntu 9.10, kernel 2.6.31-14-generic
uuid 7eafc764-da64-4a28-8042-752b9eb621fc
kernel /boot/vmlinuz-2.6.31-14-generic root=UUID=7eafc764-da64-4a28-8042-752b9eb621fc ro quiet splash
initrd /boot/initrd.img-2.6.31-14-generic
quiet
title Ubuntu 9.10, kernel 2.6.31-14-generic (recovery mode)
uuid 7eafc764-da64-4a28-8042-752b9eb621fc
kernel /boot/vmlinuz-2.6.31-14-generic root=UUID=7eafc764-da64-4a28-8042-752b9eb621fc ro single
initrd /boot/initrd.img-2.6.31-14-generic
title Ubuntu 9.10, kernel 2.6.28-11-generic
uuid 7eafc764-da64-4a28-8042-752b9eb621fc
kernel /boot/vmlinuz-2.6.28-11-generic root=UUID=7eafc764-da64-4a28-8042-752b9eb621fc ro quiet splash
initrd /boot/initrd.img-2.6.28-11-generic
quiet
title Ubuntu 9.10, kernel 2.6.28-11-generic (recovery mode)
uuid 7eafc764-da64-4a28-8042-752b9eb621fc
kernel /boot/vmlinuz-2.6.28-11-generic root=UUID=7eafc764-da64-4a28-8042-752b9eb621fc ro single
initrd /boot/initrd.img-2.6.28-11-generic
title Ubuntu 9.10, memtest86+
uuid 7eafc764-da64-4a28-8042-752b9eb621fc
kernel /boot/memtest86+.bin
quiet
### END DEBIAN AUTOMAGIC KERNELS LIST
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