Dacreo OS is the verified, immutable foundation that Dacreo apto runs on. Built on Yocto LTS, designed for spacecraft that cannot afford to fail.

OS 0.1 /

The root filesystem is read-only and cryptographically verified. A separate writable data partition isolates mutable workloads from the system baseline. Radiation-induced corruption cannot persist across a restart. The system always boots from a known-good, verified state.

OS 0.2 /

Every software update is delivered as an atomic, signed bundle. It is validated before it replaces the active system partition. If validation fails for any reason, the previous partition remains active and the spacecraft continues operating. On-orbit factory reset capability handles recovery from worst-case scenarios without physical access.

OS 0.3 /

Every package has 100% source traceability through the Yocto build system. The image is minimal by design, reducing both the cybersecurity attack surface and the size of each over-the-air update bundle. Signed update delivery uses X.509 cryptography end to end.