portable estate · runs from anywhere

Every tool in the AI-Native Solutions estate, cached offline in one page. Bundle once, carry on USB or microSD, launch on any machine — no internet required. Includes a documented path to bake FallBoot into a bootable GrapheneOS installer USB.

idle

Tools cached

0 / 16

Bundle size

— MB

estimating

Storage quota

— MB

available

Integrity

— unchecked

run verify

Cached offline First-fetch needed Unavailable

storage · per-tool breakdown

Every URL fetched by Bundle lives in the browser's Cache Storage under fallboot-v1. Cross-origin responses from *.github.io are stored as opaque — the browser serves them transparently on navigation but JavaScript cannot inspect their bytes. That's fine for launch-and-use; it means the size readouts for opaque entries are estimated from server content-length or a fixed padding when unknown.

— run Bundle to populate —

boot from USB · GrapheneOS installer + FallBoot payload

Turn a USB stick into a multi-boot device that carries the GrapheneOS installer and the FallBoot cache. Useful for border crossings, field deployment, or provisioning a fresh device without ever going online.

materials

USB 3.0+ stick, 32 GB or larger
A Linux or macOS machine (Windows works but the Ventoy CLI is smoother on POSIX)
Latest GrapheneOS installer ISO from grapheneos.org/install
Ventoy (multi-boot loader) from ventoy.net
Portable Chromium build (e.g. ungoogled-chromium) from ungoogled-chromium-binaries

step 1 · install ventoy on the USB

# Linux/macOS
sudo ./Ventoy2Disk.sh -i /dev/sdX     # replace sdX with your USB device

# Windows
Ventoy2Disk.exe → select USB → Install

Ventoy creates two partitions: a small VTOYEFI partition (bootloader) and a large exFAT partition for payloads. Anything you drop onto the exFAT partition is bootable if Ventoy recognises the format (ISO, IMG, WIM, VHD, EFI).

step 2 · drop the GrapheneOS installer ISO

cp grapheneos-installer-*.iso /media/$USER/Ventoy/

step 3 · export the FallBoot bundle

Click Export bundle (.zip) above. The zip contains this page, the service worker, the PWA manifest, and every cached tool's HTML entry.

step 4 · add a portable Chromium + the FallBoot payload

mkdir -p /media/$USER/Ventoy/fallboot
unzip fallboot-bundle.zip -d /media/$USER/Ventoy/fallboot/
cp -r ungoogled-chromium-portable /media/$USER/Ventoy/fallboot/browser/

On any machine that boots the USB (or mounts it as a data drive), the user opens fallboot/browser/chrome.exe --user-data-dir=./profile file:///path/to/fallboot/index.html. The service worker installs on first open; from then on everything runs from the local cache.

step 5 · verify before travel

On the machine you'll leave behind: mount the USB, boot the portable Chromium into index.html, run Verify integrity. Green across the board means the bundle survived the copy. Any coral row means re-export.

border-crossing notes

The USB stick alone shows up as a plain storage device. There's no active network stack, no signed-in accounts, no leaked identifiers.
Every estate tool inside is local-first (WebLLM, IndexedDB, WebRTC) so no traffic leaves the machine once loaded from cache.
GrapheneOS install itself is a separate act — the ISO on the USB gives you the option to reformat the phone but does not do so on its own.
If you carry hashes on paper (the Verify integrity output), you can prove on the other side that the bundle wasn't tampered with in transit.

activity log

— boot log will appear here —

about · FallBoot

FallBoot is a boot entry point. It reads the FallHarbor manifest, shows every estate tool with its offline status, and bundles them all into browser Cache Storage on demand. The result is a portable estate that travels on a USB stick.

Uses only already-shipped estate primitives:

FallHarbor — the tool manifest and directory
FallStore — content-addressed local cache pattern
Cache Storage API + service worker — browser-native offline layer
Web Crypto (SHA-256) — integrity checks against a pinned manifest

MIT · sjgant80-hub/fallboot · v1 · 2026-07-06