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grub reaip script

Grub repair script

Haziran 2026
Shell
GITHUB

GRUB Repair script

This script helps you reinstall or update the GRUB bootloader on Manjaro or Arch-based systems from a live USB environment.

Features

  • Reinstall GRUB
  • Update only grub.cfg
  • Supports Btrfs and standard filesystems
  • Works only in live USB environment
  • Supports GUI (Zenity) and CLI modes
  • English language support and For Turkish version, see README_TR.md

Usage

  1. Boot your system from a live USB and open a terminal.
  2. Run the script:
   sudo bash grub-repair.sh
  1. Select “English” language if prompted.
  2. Choose the desired action (Reinstall or Update).
  3. Enter your root (/) and EFI partitions (examples provided).
  4. Specify if the root partition is Btrfs.
  5. The script will mount the partitions, chroot, and perform the selected action.
  6. Once done, reboot your system.

Notes

  • Run this script only on a live USB environment.
  • Use lsblk -f to check partition information.
  • EFI partition is usually a small (~100-500 MB) FAT32 partition.
  • Root partition can be ext4, btrfs, or other filesystem.

Requirements

  • bash
  • zenity (for GUI; will fallback to terminal if not present)
  • manjaro-chroot (for Manjaro/Arch)
  • grub-install and grub-mkconfig utilities

License

Distributed under the MIT License.

Contact

For bugs or suggestions, please open an issue on GitHub.

Shell % 100MIT License