{"id":"rhel9-dual-upgrade-paradigm","text":"RHEL 9 supports two complementary OS upgrade paradigms: sequential in-place upgrades via Leapp (with mandatory preupgrade assessment and no major version skipping) for traditional RPM-based systems, and atomic image-based updates via rpm-ostree/bootc with automated health-check rollback (Greenboot) for Edge deployments.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"rhel9-dual-upgrade-paradigm","truth_value":"IN","reason":"premise"}]}}