Saved-Data Backups

Nerospace keeps its world state — oxygen sources, terraformer progress, meteor sites, the launch pad and station registries, and the cargo route registry (pads, routes and flights in the air) — in the world's saved-data files, alongside vanilla's own. Starting after 1.0.0, the mod also protects that state against disk problems.

What it does#

• Backup files. Nerospace periodically writes a compact last-known-good copy of each of its saved-data stores to data/nerospace_<name>_backup.dat inside the matching dimension folder of your world save. Backups are only rewritten when something actually changed, and are written atomically so an ill-timed crash can never corrupt the backup itself.
• Automatic recovery. If Minecraft cannot read one of Nerospace's primary saved-data files (a corrupted disk, a truncated file after a power loss), the game no longer crashes. Nerospace restores the last-known-good backup instead; if the backup is unreadable too, it falls back to a fresh, empty store so the world stays playable. Either way a clean file is rewritten at the next world save, and the problem is noted in the log.

What recovery means in practice#

Oxygen fields, terraforming radii, and meteor state largely rebuild themselves from the blocks in the world within seconds. The pad, station and cargo-route registries are the valuable part — with a backup they roll back to the last backup point instead of being lost. Cargo Pads re-register themselves as their chunks load, so even a fresh store heals; a pad that lost its owner that way can be re-claimed by sneak-right-clicking it, and a flight that was in the air is delivered from the backup.

Privacy#

Backups contain exactly the same data as the primary files and never leave your world save. A data-erasure request is applied to the backup immediately, not just at the next periodic pass.