# maharmstone/quibble

Quibble - the custom Windows bootloader

Repository: https://github.com/maharmstone/quibble
Canonical: https://ross.abutalabs.com/products/quibble
Language: C
License: LGPL-3.0
License Family: copyleft
Last push: 2024-06-23T14:05:02+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 2393, "days_push": 801, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2441, forks 100 (observed 2026-08-28T04:06:52.393266+00:00)

## What it is
Quibble is an open-source custom Windows bootloader reimplementation of bootmgfw.efi and winload.efi, capable of booting Windows XP through Windows 10 22H2. It is extensible, allowing Windows to boot from filesystems other than NTFS, such as Btrfs via WinBtrfs.

## Use cases
- boot Windows from a Btrfs partition
- replace the default Windows bootloader with an extensible one
- dual-boot Windows alongside Linux on a shared Btrfs disk
- test Windows booting in QEMU or VirtualBox with custom EFI
- convert an NTFS Windows install to Btrfs and keep it bootable

## When to choose
- you want Windows to boot from a non-NTFS filesystem like Btrfs
- you need a customizable or hackable Windows boot process
- you are experimenting with UEFI bootloaders in VMs

## When to avoid
- you need a reliable bootloader for a production or daily-use machine
- you require support for Windows 11 or versions newer than Windows 10 22H2
- your hardware has a poor-quality EFI implementation

## Facets
- artifact type: application
- maturity: experimental
- function: file-system, developer-tools
- domain: operating-systems, windows, files, developer-tools
- platform: windows, cross-platform
- tags: uefi, bootloader, btrfs, ntfs, efi, windows-boot, open-firmware

## Member repositories
- maharmstone/quibble (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:52.393266+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:30:43.355291+00:00, confidence not recorded.
  - readme: https://github.com/maharmstone/quibble (fetched 2026-08-28T04:06:52.393266+00:00, sha 27c86f260df5)
- Data as of 2026-08-30T08:39:29.467469+00:00.