Operating systems
Step-by-step guide to installing VirtualBox Guest Additions 7.2.20 on Linux: kernel headers, modules, Secure Boot, shared folders, troubleshooting, and verification.
An introduction to Kali Linux 2026.2: authorized security testing, rolling updates, APT changes, virtual machines, tools, and a practical learning…
Step-by-step Debian 12 Bookworm + KDE Plasma installation guide, updated for Bookworm's 2026 LTS status, including downloads, partitioning, Wayland/X11, repositories,…
Historical and updated Debian 12 Bookworm netinst server guide with 40 original screenshots, networking, partitioning, APT, SSH, LTS status, and…
A complete introduction to GNU/Linux: GNU vs. Linux, the kernel, distributions, systemd, terminal, desktops, package managers, security, containers, and current…
A complete introduction to Microsoft Windows, from MS-DOS and Windows NT to Windows 11, security, PowerShell, WSL, virtualization, compatibility, and…
A complete introduction to operating systems, including kernels, processes, memory, filesystems, drivers, security, interfaces, and major modern OS families.
What hardware drivers do, how they differ from firmware, where to get trusted Windows and Linux drivers, and when updating…
A current guide to installing Ubuntu 20.04.6 LTS for compatibility labs and legacy systems, including ESM coverage, storage, updates, and…
A current guide to clean-installing Windows 10 for legacy systems and labs, including Windows 10 22H2, ESU, partitions, drivers, activation,…