OpenBSD Upgrade 7.8 to 7.9

The OpenBSD project released version 7.9 on May 19, 2026, marking its 60th official release. This update provides a step-by-step upgrade path from OpenBSD 7.8, primarily recommending the use of sysupgrade. Essential pre-upgrade requirements include ensuring at least 1.1GB of free space in the /usr directory. Users must also verify configuration changes and special packages, notably a major update for PostgreSQL to version 18.1, to ensure compatibility before proceeding with the installation process.