tags:
  - Books

Arch-chroot

===============================

sudo mount /dev/nvme1n1p2 /mnt
sudo mount /dev/nvme1n1p1 /mnt/boot/efi
sudo arch-chroot /mnt
grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=endeavouros
grub-mkconfig -o /boot/grub/grub.cfg

exit

sudo umount /mnt/boot/efi
sudo umount /mnt

===============================

sudo mount /dev/nvme0n1p5 /mnt
sudo mount /dev/nvme0n1p3 /mnt/boot/efi
sudo arch-chroot /mnt
grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=endeavouros
grub-mkconfig -o /boot/grub/grub.cfg

exit

sudo umount /mnt/boot/efi
sudo umount /mnt

===============================

sudo mount /dev/sdd5 /mnt
sudo mount /dev/sdd3 /mnt/boot/efi
sudo arch-chroot /mnt
grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=endeavouros
grub-mkconfig -o /boot/grub/grub.cfg

exit

sudo umount /mnt/boot/efi
sudo umount /mnt

===============================

Fixing grub bootloader on Arch

How to use boot install iso to repair grub on endeavouos disk /dev/sda5. EFI is /dev/sda3
To repair GRUB on your EndeavourOS disk using a live ISO, you need to boot into the live environment, chroot into your installed system, and then reinstall GRUB for an EFI setup.
Step-by-Step GRUB Repair Guide
Boot from the EndeavourOS Live USB/ISO. Ensure you boot in UEFI mode; look for a boot menu option starting with "UEFI:" for your USB drive.
Open a terminal in the live session.
Identify your partitions using the lsblk or fdisk -l command. Confirm that /dev/sda5 is your EndeavourOS root partition (usually ext4 filesystem) and /dev/sda3 is your EFI system partition (usually vfat filesystem).
Mount your root partition to /mnt.
bash
sudo mount /dev/sda5 /mnt
(sudo mount /dev/sdd5 /mnt)

Use code with caution.

Create the EFI mount point inside the mounted root and mount your EFI partition to it.
bash
sudo mkdir -p /mnt/boot/efi
sudo mount /dev/sda3 /mnt/boot/efi
(sudo mount /dev/sdd3 /mnt/boot/efi)

MX chroot: sudo mount /dev/sda3 /mnt/chroot-rescue-scan/sda5/boot/efi

Use code with caution.

Note: The mount point is /mnt/boot/efi, as this is the standard path EndeavourOS uses for the EFI partition.
Chroot into the installed system using the arch-chroot tool, which automatically handles binding necessary filesystems (/dev, /proc, /sys).
bash
sudo arch-chroot /mnt
Use code with caution.

You are now operating as root within your installed EndeavourOS environment.
Reinstall GRUB to the EFI partition.
bash
grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=endeavouros
(grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=cachyos)

Use code with caution.

--target=x86_64-efi: Specifies the architecture for the EFI bootloader.
--efi-directory=/boot/efi: Points to the mounted EFI partition.
--bootloader-id=endeavourOS: Creates an entry in your UEFI firmware named "endeavourOS".
Update the GRUB configuration file.
bash
grub-mkconfig -o /boot/grub/grub.cfg
Use code with caution.

Exit the chroot environment and clean up.
bash
exit
Use code with caution.

Unmount the partitions.
bash
sudo umount /mnt/boot/efi
sudo umount /mnt
Use code with caution.

Reboot your system and remove the live USB. Your system should now boot into EndeavourOS.
These articles detail the steps for repairing GRUB on an EndeavourOS EFI installation using a live ISO and arch-chroot:
Repairing GRUB - Newbie - EndeavourOS Forum
Oct 3, 2023 — To fix this issue, you can follow these steps: * Identify the EFI partition: First, you need to identify the EFI partit...

EndeavourOS
How to repair GRUB in Linux? - Tencent Cloud
Mar 17, 2025 — To repair GRUB (GRand Unified Bootloader) in Linux, you typically need to follow these steps: * Step 1: Boot from a Li...

Tencent Cloud
If you are having trouble booting, we can look at the output of some commands from the live session to help diagnose the issue. Would you like to know how to check your fstab file or view the existing EFI boot entries?

11 sites
Arch-chroot - EndeavourOS Discovery
Dec 19, 2022 — To be able to use arch-chroot these are the steps to follow: * Boot into the EndeavourOS installer ISO (archiso itself...

EndeavourOS

Fixing EndeavourOS Boot Failures - GitHub Gist
Steps to fix 1) Boot with an EndeavourOS live USB stick. 2) Decrypt and mount the encrypted and boot disk partitions. * 3) Roo...

Gist

How to repair GRUB in Linux? - Tencent Cloud
Mar 17, 2025 — How to repair GRUB in Linux? Step 1: Boot from a Live USB/DVD. ... Step 2: Identify Your Root Partition. ... * Ste...

Tencent Cloud
Show all
Ask anything

AI Mode response is ready

===============================

Boot-Repair for Ubuntu


Warning: This software is able to share information about your device for diagnostic purposes. You can chose to opt out. Please read this page fully. The log is quite helpful especially for the novice users.

Boot-Repair is a simple tool to repair frequent boot issues you may encounter in Ubuntu like when you can't boot Ubuntu after installing Windows or another Linux distribution, or when you can't boot Windows after installing Ubuntu, or when GRUB is not displayed anymore, some upgrade breaks GRUB, etc.

Boot-Repair lets you fix these issues with a simple click, which (generally reinstalls GRUB and) restores access to the operating systems you had installed before the issue.

Boot-Repair also has advanced options to back up table partitions, back up bootsectors, create a Boot-Info (to get help by email or forum), or change the default repair parameters: configure GRUB, add kernel options (acpi=off ...), purge GRUB, change the default OS, restore a Windows-compatible MBR, repair a broken filesystem, specify the disk where GRUB should be installed, etc.

This tool is aimed entirely at those new to Ubuntu who want to get past their booting issues and enjoy using Linux. For the purpose of helping the forum and IRC members help you diagnose issues with your boot setup, Boot-Repair creates a Boot-Info diagnosis for you to share that allows experienced members to see what's wrong with your boot. The tool systematically asks if you want to upload this diagnosis to a pastebin or keep it local. The Pastebin is not easily searchable and automatically expires after some days, but for confidentiality purpose you may prefer to keep the report local.

Boot-Repair is a free software, licensed under GNU-GPL.

Getting Boot-Repair

1st option : get a disk including Boot-Repair

The easiest way to use Boot-Repair is to create a live-USB disk of Boot-Repair-Disk (a disc starting Boot-Repair automatically), and boot on it.

Remark : it is recommended to install the ISO on a live-USB (eg via UnetBootin or LiliUSB or Universal USB Installer). Do not burn it on a DVD if your boot is in EFI mode.

2nd option : install Boot-Repair in Ubuntu

either from an Ubuntu live-session (boot your computer on a Ubuntu live-USB then choose "Try Ubuntu") or from your installed Ubuntu session (if you can access it)
connect to the Internet
open a new Terminal, then type the following commands (press Enter after each line):

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

Using Boot-Repair

- First click the Create a Boot-Info Summary button. This will simply create a Boot-Info diagnosis. A pop-up will ask if you want to upload the report online in order to share it more easily.
- Check the diagnosis contents. If any doubt, you can share it on Ubuntu Forums (here) along with a description of your boot issue, so that experienced forum members can advise.
  - Once you get green light from experienced forum members, click the Recommended repair button. When repair is finished, note the new URL (paste.ubuntu.com/XXXXX) that appeared on a paper, then reboot and check if you recovered access to your OSs. - If the repair did not succeed, indicate the URL to people who help you by email or forum.

Advanced options

Warning: the default settings are the ones used by the "Recommended Repair". Changing them in the Advanced options may worsen your problem. Don't change them unless requested by experienced helpers.

External Links

Official website of Boot-Repair
Topic "Boot-repair: Graphical tool to repair the PC boot in 1 click !" - on Ubuntu forum, for any questions/comments.
HOWTO : easily create a Boot-Info summary

Boot-Repair (last edited 2022-01-18 23:30:53 by yannubuntu)

The material on this wiki is available under a free license, see Copyright / License for details
You can contribute to this wiki, see Wiki Guide for details

===============================

How to use boot install iso to repair grub on endeavouos

disk /dev/sda5. EFI is /dev/sda3 - Google Search

To repair GRUB on your EndeavourOS disk using a live ISO, you need to boot into the
live environment, chroot into your installed system, and then reinstall GRUB for an EFI
setup.
Step-by-Step GRUB Repair Guide

Boot from the EndeavourOS Live USB/ISO. Ensure you boot in UEFI mode; look for a
boot menu option starting with "UEFI:" for your USB drive.
Open a terminal in the live session.
Identify your partitions using the lsblk or fdisk -l command. Confirm that
/dev/sda5 is your EndeavourOS root partition (usually ext4 filesystem) and
/dev/sda3 is your EFI system partition (usually vfat filesystem).
Mount your root partition to /mnt .
bash
sudo mount /dev/sda5 /mnt
Use code with caution.
Create the EFI mount point inside the mounted root and mount your EFI partition to it.
bash
sudo mkdir -p /mnt/boot/efi
sudo mount /dev/sda3 /mnt/boot/efi
Ask anything
Use code with caution.
https://www.google.com/search?q=How+to+use+boot+install+iso+to+repair+grub+on+endeavouos+disk+%2Fdev%2Fsda5.+EFI+is+%2Fdev%2…
Chroot into the installed system using the arch-chroot tool, which automatically
handles binding necessary filesystems ( /dev , /proc , /sys ).
bash
sudo arch-chroot /mnt
Use code with caution.
You are now operating as root within your installed EndeavourOS environment.
Reinstall GRUB to the EFI partition.
bash
grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootload
Use code with caution.
--target=x86_64-efi : Specifies the architecture for the EFI bootloader.
--efi-directory=/boot/efi : Points to the mounted EFI partition.
--bootloader-id=endeavourOS : Creates an entry in your UEFI firmware named
"endeavourOS".
Update the GRUB configuration file.
bash
grub-mkconfig -o /boot/grub/grub.cfg
Use code with caution.
Exit the chroot environment and clean up.
bash
https://www.google.com/search?q=How+to+use+boot+install+iso+to+repair+grub+on+endeavouos+disk+%2Fdev%2Fsda5.+EFI+is+%2Fdev%2…
Unmount the partitions.
bash
sudo umount /mnt/boot/efi
sudo umount /mnt
Use code with caution.
Reboot your system and remove the live USB. Your system should now boot into
EndeavourOS.
These articles detail the steps for repairing GRUB on an EndeavourOS EFI installation
using a live ISO and arch-chroot:
Repairing GRUB - Newbie - EndeavourOS
Forum
Oct 3, 2023 — To fix this issue, you can follow these
steps: Identify the EFI partition: First, you need to…
EndeavourOS
How to repair GRUB in Linux? - Tencent Cloud
Mar 17, 2025 — To repair GRUB (GRand Unified
Bootloader) in Linux, you typically need to follow thes…
Tencent Cloud
If you are having trouble booting, we can look at the output of some commands from the
live session to help diagnose the issue. Would you like to know how to check your
fstab file or view the existing EFI boot entries?
11 sites
Arch-chroot - EndeavourOS Discovery
Dec 19, 2022 — To be able to use arch-chroot these are the steps to follow:
Boot into the EndeavourOS installer ISO (archiso itself...
EndeavourOS
https://www.google.com/search?q=How+to+use+boot+install+iso+to+repair+grub+on+endeavouos+disk+%2Fdev%2Fsda5.+EFI+is+%2Fdev%2…

Fixing EndeavourOS Boot Failures - GitHub Gist
Steps to fix

1. Boot with an
  EndeavourOS
  live USB stick. 2) Decrypt and
  AI Mode
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  mount the encrypted and boot disk partitions. 3) Roo...
  Gist
  How to repair GRUB in Linux? - Tencent Cloud
  Mar 17, 2025 — How to repair GRUB in Linux? Step 1: Boot from a Live USB/DVD. ... Step
  2: Identify Your Root Partition. ... * Ste...
  Tencent Cloud
  Show all
  https://www.google.com/search?q=How+to+use+boot+install+iso+to+repair+grub+on+endeavouos+disk+%2Fdev%2Fsda5.+EFI+is+%2Fdev%2…