Operating systems, infrastructure, emulation, and technical history.
Configure Haiku Deskbar, app lists and tray, add the Workspaces applet, switch or carry windows by keyboard, and organize daily tasks.
Haiku R1 Alpha 1 arrived on September 14, 2009 as the project's first official public release, distributed as an installable live CD.
Trace a modern Linux boot across firmware, boot manager, kernel, initramfs, real root, and PID 1 with safe diagnostics for each handoff.
Understand cgroup v2 hierarchy, controller delegation, CPU, memory, I/O and PID controls, using safe systemd workflows and kernel evidence.
Understand eBPF programs, verifier, maps, hooks, BTF and CO-RE, privileges and operational risks without treating kernel execution as a sandbox.
df shows free space but writes fail with ENOSPC — three distinct root causes look identical from outside; here's how to tell them apart.
Ping by IP works but hostnames don't resolve — a systematic path through resolv.conf, systemd-resolved, and nsswitch.conf finds where it breaks.
Your machine boots straight into a minimal grub rescue prompt instead of Linux. Here's how to get back to a working bootloader without reinstalling the OS.
A service won't start, logs are unhelpful, and file ownership looks correct — SELinux or AppArmor's invisible permission layer is usually why.
An application errors with EMFILE or ENFILE even though the system isn't obviously out of resources — find and raise the actual limit.