4- install boot manager

Question 1

what GRUB stands for?

Answer 1

GRand Unified Boot Loader

Question 2

In Grub menu, what can we edit by pressing e? will these changes be permanent?

Answer 2

You can edit the commands before booting this allows you to change the hard drive you’re booting from, the kernel and the initrd. These changes will not be adopted permanently.

Question 3

what file contains the GRUB configuration?

Answer 3

/boot/grub/grub.conf

Question 4

What are the three parameters of grub title menu?

Answer 4

• The title can be anything we want it to be.
• root - is hard drive and partition. The root or / of our system.
• kernel - the kernel (vmlinux) and where it is stored. rhgb = red hat graphical boot. quiet hides the boot messages
• initrd - the initial ram disk for the kernel

Question 5

vmlinuz

Answer 5

kernel file

Question 6

if you want to install GRUB on /dev/sdb, what command would you run?

Answer 6

grub-install /dev/sdb or grub-install /dev/hd1

Question 7

grub2

Answer 7

• hitting ¨ e¨ allows for entry editing
• also uses ¨/boot¨ directory has EFI support
• uses /etc/grub.d directory
• grub2-mkconfig - used to build menus for grub

Question 8

/boot/grub2

Answer 8

It has:

• grub.cfg
• generated menu file, containing a more complex configuration that is a combination of a number of files when the ‘grub2-mkconfig’ utility is used
• editing changes here will be lost during the next run of the ‘grub2-mkconfig’ utility

Question 9

where the grub2 scripts located?

Answer 9

/etc/grub2.d/

Question 10

How do you make changes to grub2 configurations?

Answer 10

Edit files in /etc/grub.d or edit /etc/default/grub

Question 11

How would you regenerate the GRUB2 menu to include any changes to scripts you may have made. What should you always do before running this command?

Answer 11

as super user: grub-mkconfig > /boot/grub2/grub.cfg

before doing this you should always backup the grub.cfg file using the cp command