# Linux Bootloader (GRUB) Recovery

## Symptoms

- `grub rescue>` prompt
- kernel not found
- initramfs panic after bootloader stage

## Diagnostics

1. Identify Linux root and EFI partitions with `lsblk -f`.
2. Mount root and EFI partitions.
3. Validate `/boot`, `/boot/efi`, and kernel/initramfs files exist.

## Repair Steps

1. Reinstall or regenerate GRUB config from chroot.
2. Rebuild initramfs if kernel artifacts are missing/corrupted.
3. Re-check EFI boot entries.

## Validation

- Normal GRUB menu appears.
- Kernel boots to multi-user target.