Home Assistant’s backup guide adds practical recovery steps for storage errors, restores that refuse to start and backups that cannot be read. For failing local storage, it puts copying a backup and saving its encryption key ahead of replacing the device.
The guide explains why a restore can temporarily leave the ordinary interface showing “Not found” and how Home Assistant OS owners can follow Supervisor’s progress through the Observer. It also distinguishes an incomplete archive from a wrong encryption key, while noting that a damaged encrypted backup can produce the same error as a wrong key.
The guide also spells out the internet, system-health and free-space checks that can prevent a restore from starting. It advises leaving an active restore running rather than switching the system off when the ordinary interface disappears.