Problem with reinstalling grub2

Question

My gui was gone (I turned on my laptop and memtest popped out and was still there forever) so after some searching I understood that I have to reinstall grub2. I downloaded Ubuntu live cd, put it in a usb stick and booted from there. I opened the terminal and I followed these steps from here.

sudo mount /dev/sda1 /mnt
sudo mount --bind /dev /mnt/dev &&
sudo mount --bind /dev/pts /mnt/dev/pts &&
sudo mount --bind /proc /mnt/proc &&
sudo mount --bind /sys /mnt/sys
sudo chroot /mnt

grub-install /dev/sda
grub-install --recheck /dev/sda
update-grub

exit &&
sudo umount /mnt/sys &&
sudo umount /mnt/proc &&
sudo umount /mnt/dev/pts &&
sudo umount /mnt/dev &&
sudo umount /mnt

Grub install messages were ok.

I restarted the laptop,change boot priority and ended up in a error Can't find command 'fwsetup' ...And I did it again and I saw that after the grep-update I came up with a warning

Setting GRUB_TIMEOUT to a non-zero value when GRUB_HIDDEN_TIMEOUT is set is no longer supported.
Adding boot menu entry for EFI firmware configuration done.

Is this responsible for that? What is wrong?

Possible duplicate of How can I repair grub? (How to get Ubuntu back after installing Windows?) — David Foerster, Feb 15 '17 at 01:17
btw do i have to choose uefi or legacy mode to boot from usb? — Xristoforos Rittas, Feb 15 '17 at 15:35
Doesn't matter. The linked question is about repairing Grub in general no matter how it broke. You can select the boot mode in BIOS. Please look it up in the system manual if you don't know how. — David Foerster, Feb 15 '17 at 15:40

score 1 · Answer 1 · edited Feb 15 '17 at 17:28

1

Install and use Boot-repair from a live session.

sudo add-apt-repository ppa:yannubuntu/boot-repair
sudo apt-get update
sudo apt-get install boot-repair && boot-repair

edited Feb 15 '17 at 17:28

answered Feb 15 '17 at 02:58

Etapas UseR

35

what do you mean with the '' persistence''? – Xristoforos Rittas Feb 15 '17 at 15:34
bro it worked! boot-repair repaired the whole problem! thanks a lot! – Xristoforos Rittas Feb 15 '17 at 16:11
Persistence isn't required. I'll edit your question because otherwise it's correct and helpful. – Feb 15 '17 at 17:12

Problem with reinstalling grub2

1 Answers1