Please help Grub broken

Support
1

#Sorry my English is bad
My system GPT and UFEI
and dual boot windows and manjaro
My grub is broken

  1. Live usb manjaro
  2. Mount encrypt “sday” (installed partion manjaro) with file manager
  3. Now my encryption mount on the path ( run/media/manjaro~
  4. Monut sda1 (boot) on the path (/run/media/manjaro~/boot/efi)
  5. manjaro-chroot /run/media/manjaro~/
  6. grub-install --target=x86_64-efi --efi-directory=/boot/efi/ --bootloader-id=manjaro --recheck
  7. no error success install
  8. grub-mkconfig -o /boot/grub/grub.cfg
    Erro not found sdb2…

Not add windows and manjaro
Please help
How to fix?

2

for win 10 , os-probe is desactived by default , if you need

`echo GRUB_DISABLE_OS_PROBER=false|sudo tee -a /etc/default/grub && sudo update-grub`

for chroot an encrypted uefi system

sudo su

cryptsetup luksOpen /dev/sda2 ssd ( here > name of the drive )
cryptsetup luksOpen /dev/sda3 swap

mount /dev/mapper/ssd /mnt
mount /dev/sda1 /mnt/boot/efi

mount -t proc proc /mnt/proc
mount -t sysfs sys /mnt/sys
mount -o bind /dev /mnt/dev
mount -t devpts pts /mnt/dev/pts/

chroot /mnt

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3

Thank you

4

I did the above commands
1.chroot /mnt
2.grub-install --target=x86_64-efi --efi-directory=/boot/efi/ --bootloader-id=manjaro --recheck
Show error " installing for x86_64-efi platform
EFI Variable are not supported on this system
EFI Variable are not supported on this system
grub-install: error: efibootmgr failed the boot entry; no such file or directory.

5

When you get this error

EFI Variable are not supported on this system

run

sudo modprobe efivarfs

Reference:
https://wiki.manjaro.org/index.php/GRUB/Restore_the_GRUB_Bootloader#EFI_System

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6

can you report

inxi -Fza 
test -d /sys/firmware/efi && echo efi || echo bios
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7

1.exit
2.sudo modprobe efivarfs
3.chroot /mnt
4.efivar-tester
Show error
“EFI Variable are not supported on this system”

:disappointed_relieved::disappointed_relieved:

8

recheck info

inxi -Mxa ( check for UEFI only , not UEFI[legacy] or Bios )
test -d /sys/firmware/efi && echo efi || echo bios

in your UEFI motherboard

disable secure boot
disable fastboot
disks on AHCI
no legacy
no CSM
UEFI only or others ( not windows )

you should see
UEFI < USB vendor name > < partition 1 > → boot in EFI

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9

1.inxi -Fza
can’t sorry because I do not have internet access on my computer at the moment, I type with my mobile phone

2.test -d /sys/firmware/efi && echo efi || echo bios

“efi”

10

inxi -Mxa ( check for UEFI only , not UEFI[legacy] or Bios )

UEFI:hewlett-Packard

11

take your time , first recheck option in UEFI motherboard
then see after
https://www.youtube.com/results?search_query=hp+admin+uefi+motherboard

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12

I check BIOS
1.disable secure boot ( disabled)
2.disable fastboot (disabled)
3.disks on AHCI ( yes ticked)
4.no legacy ,no CSM (UEFI Native without CGM)
5.remove password bios
6.UEFI only or others ( I don’t understand)

Start live usb
I did all the steps again,
Show error again
“EFI Variable are not supported on this system”

you should see
UEFI < USB vendor name > < partition 1 > → boot in EFI
Where should I see?

I made a mistake deleting the entire boot partition
I had just copied it before
I paste

13

When boot laptop
After password grub partion just show
“UWFI Firemware settings”

14

Virtualization is enable bios

15

What are the symptoms?
How do you know that it is broken?

I ask because
just yesterday
after some updates
I rebooted my laptop.

I could not type the password for my encrypted drive.
It was as if there was no keyboard input possible.

It turned out to be a missing
keyboard
hook
in /etc/mkinitcpio.conf

I never had it in there - and it still worked flawlessly until yesterday.

After the last update I did - it no longer worked.

I chrooted,
added the
keyboard hook
re-generated the initrd
and all was good again.

If this is your symptom, this is the possible fix.

16

I know the drive password and I have no problem with it

By mistake I deleted the entire contents of the boot/efi partition I had copied and then just paste then broken grub

17

ok
it was a possible scenario.

It definitely caught me by surprise.
It always worked - but then it suddenly didn’t anymore.
… because of a missing “keyboard” hook that was never present before.

18

Friends, does anyone have a solution?

Will my Linux settings be compromised if I reinstall?

19

I add this command
1.mount -t efivarfs efivarfs /sys/firmware/efi/efivars
2. 1. grub-install --target=x86_64-efi --efi-directory=/boot/efi/ --bootloader-id=manjaro --recheck
3. Installation finish. No error reported
4.grub-mkconfig -o /boot/grub/grub.cfg
5.

DSC_1508~01_compress92
DSC_1508~01_compress922372×445 212 KB

Not add win10 and manjaro!!
what is the problem ?
Thank you for your help

20

for win 10 , os-probe is desactived by default , if you need

`echo GRUB_DISABLE_OS_PROBER=false|sudo tee -a /etc/default/grub && sudo update-grub`

check for efi

sudo efibootmgr -v
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