os
OS is the operating-system development hub.
This node is intentionally small. It points to curated tracks instead of flattening every OS-related note into one list.
Start with concurrency control 1 for no-std kernel synchronization or xv6 bootloader for the boot path.
Use xv6 for xv6 and octox-style teaching-kernel notes. Use Linux for Linux troubleshooting, kernel evidence, virtualization timekeeping, and kernel patch work.