I typed "sudo update-grub sudo && grub-install /dev/sda" but still I have to "set root=~ set prefix ~ insmod normal;normal;" to go to login display

Question

As I boot my computer , I always have to type the following to go inside the login display of the os.

set root=(hd1,gpt2);

set prefix=(hd1,gpt2)/boot/grub;

insmod normal;

normal;

I want to set the configuration(s) as default to avoid typing the above codes again and again.

I use the debian-based operating system and found the article of the solution which exactly tackles my current problem.

Brief solution which I quote is as below.

sudo update-grub;

sudo grub-install /dev/sda;
 
reboot;

The results which were obtained typing the above 2 commands are as below.

Seemingly no such error was found but as I reboot, the same GRUB menu appears even I've done the 2 commands...

This solution and this solution failed.

What can I do for next?

I've done the below 4 commands and got the below results .

efibootmgr -v;

tree -a /boot/efi;

lsblk;

sudo tree -a /boot/efi;

Answer 1

STEP1: Take the archive of the contents of the os.

STEP2 : Install the server version of ubuntu into the ssd(which means the original os will be deleted).

STEP3 : Reinstall the os which you really want to reinstall .

STEP4 : Solved!