Review: OpenBSD 7.2
The OpenBSD project develops an operating system which is lean, clearly documented, and has a proactive approach to security. The project is also the source of such popular software packages as OpenSSH and LibreSSL which are included in many open source operating systems. OpenBSD's latest release was version 7.2 which can run on over a dozen CPU architectures.
The install media for OpenBSD is available in separate formats for optical media (ISO files) and USB thumb drives (IMG files). The ISO file for the x86_64 architecture is 556MB while the IMG file is 664MB. Booting the OpenBSD media brings up a text console where we are asked if we'd like to install a new copy of OpenBSD, upgrade the operating system, perform an auto-install, or run a command line shell.
The command line shell provided on the install media offers a limited environment. There is just enough command software available to perform some tests and get the system installed. There isn't a full array of tools provided like you'd get on a full install of OpenBSD or from most Linux live discs.