AirlockMass storage over the network

Plug a USB drive, SD card, or external SSD into a Raspberry Pi 4. It appears on your LAN over SMB and HTTP within seconds.

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What is Airlock?

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Plug and share

Insert any USB thumb drive, SD card, or external SSD — Airlock auto-mounts and exposes it as an SMB share. Reachable from Finder, Explorer, and GNOME Files without any client-side config.

Web + native apps

Browse files, format drives, flash and dump images, run fsck, and relabel volumes from the built-in web UI, or from the Mac and iPhone/iPad apps, which add silent mount on the Mac and Files integration on iOS.

Read-only appliance

Ships as a custom pi-gen image with a read-only root filesystem, tmpfs logs, seccomp-hardened systemd unit, and optional BadUSB / Wi-Fi / boot-time hardening.

Zero-config discovery

Advertised over Bonjour (mDNS) as airlock.local and via a dedicated _airlock._tcp service so companion apps discover instances automatically.

Handles the ugly filesystems

FAT32, exFAT, NTFS, and ext4 read-write. HFS+ read-only. Format and relabel from the browser without ever touching a shell.

Physical eject

A GPIO push button on the Pi safely unmounts every drive — and refuses, rather than lazy-unmounting, while a file is still open. A status LED shows mount state at a glance.

Native apps for Mac, iPhone and iPad

Everything the web UI does, in apps that find your Airlock by themselves.

See the apps →