Multibooting with GRUB2
This section documents my practical experience managing multi-distribution environments on production hardware. Rather than a comprehensive guide to all boot loaders, these logs reflect a specific, battle-tested setup centered around GRUB2 as the primary master gatekeeper.
The Strategy: Centralized Control
My multi-boot strategy relies on a single, primary GRUB2 installation to manage the handoff to different operating systems. However, a major friction point occurs when installing a new Linux distribution, as the installer often tries to seize control by placing its own bootloader at the top of the NVRAM boot order.
Real-World Tweaking with efibootmgr
When an installation overrides the primary boot configuration, recovery requires manual intervention through the Linux userspace tool efibootmgr.
My workflow generally involves:
1. Inspecting the NVRAM variables: Using efibootmgr -v to identify the exact boot entry paths.
2. Re-ordering the priority: Explicitly restructuring the BootOrder string to restore the original primary GRUB2 instance as the initial target.
3. Cleaning orphaned entries: Safely purging dead boot flags left behind by deleted test distributions.
Next entries will feature exact terminal command histories and configuration scripts used during my recovery workflows.