Operating systems, infrastructure, emulation, and technical history.
A practical 2026 guide to running FreeDOS 1.4 in QEMU, virtual machines, emulators or real hardware, with verified boot, USB, firmware and network safety advice.
A forensic guide to DOS TSR residency, interrupt hooks, chaining, INT 28h and InDOS reentrancy, multiplex IDs, memory ownership, safe unloading, and testing.
A precise comparison of FreeDOS and MS-DOS across APIs, executables, kernels, shells, filesystems, hardware, licensing, undocumented behavior, and testing.
The history, goals, and real-world use cases behind FreeDOS, the open-source, actively-maintained continuation of the MS-DOS-compatible operating system line.
How bhyve combines FreeBSD's vmm kernel support, explicit virtual devices, UEFI firmware, networking, and lifecycle controls.
A forensic walkthrough of FreeBSD startup from BIOS or UEFI firmware through loader, kernel initialization, init, and ordered rc services.
A hop-by-hop VNET jail diagnostic for epair ownership, addresses, routes, bridges or NAT, forwarding, PF, DNS, and misleading ping failures.
How to diagnose FreeBSD's mountroot prompt by separating missing storage, stale root specifications, filesystem damage, and ZFS boot issues.
How to trace a hung FreeBSD NFS operation through process waits, protocol version, transport, server health, firewall paths, and mount policy.
How to isolate FreeBSD repository, ABI, lock, dependency, options, distfile, and ports-build failures without damaging package state.