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How loader works? State the difference between GRUB and LILO.

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29.How loader works? State the difference between GRUB and LILO.
Ans.
1. GRUB stands for ‘Grand Unified Bootloader’.

 2. The Bootloader is the software program.

 3. If you have multiple kernel images installed on your system, you can choose which one to be executed.

 4. GRUB displays a splash screen, waits for few seconds, if you don’t enter anything, it loads the default kernel image as specified in the grub configuration file. (grub.conf in /boot)

 5. GRUB has the knowledge of the filesystem (the older Linux loader LILO didn’t understand filesystem).

 6. Grub configuration file is/boot/grub/grub.conf (/etc/grub.conf is a link to this).

 7.
#
GRUB
LILO
1
GRUB stands for ‘Grand Unified Bootloader’.
LILO stands for Linux Loader.
2
GRUB supports an unlimited number of boot entries.
LILO supports only up to 16 different boot selection.
3
GRUB can boot from network.
LILO cannot boot from network.
4
There is no need to change GRUB when the configuration file is changed as GRUB is dynamically configurable.
LILO must be written again every time you change the configuration file.
5
GRUB has an interactive command interface.
LILO does not have an interactive command interface.
6
GRUB has the knowledge of the file system.
LILO doesn’t have the knowledge of file system.
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