If you are managing a TrueNAS system and want to support this feature:

Users are currently advised to manually snapshot the freenas-boot or boot-pool via the System > Boot menu.

This request proposes a safety mechanism within the TrueNAS update utility. Before a system applies a major operating system upgrade (e.g., moving from Bluefin to Dragonfish), it would automatically trigger a ZFS snapshot of the boot pool. This ensures that if the new update fails or causes hardware incompatibility, the user can instantly roll back to a known-working state. ✨ Key Benefits

Until this is fully integrated as a "toggle" in the UI, include a Boot Pool Snapshot as a standard step in your maintenance checklist.