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==Kernel phase==
The [[kernel]] in Linux handles core processes, such as [[memory management]], task [[scheduling]], [[I/O]], [[interprocess communication]], and overall system control. This is loaded in two stages - in the first stage the kernel (as a compressed image file) is loaded into memory and decompressed, and a few fundamentals such as basic memory management are set up. Control is then switched one final time to the main kernel start process. Once the kernel is fully operational – and as part of its startup, upon being loaded and executing – the kernel looks for an [[init process]] to run, which (separately) sets up a user space and the processes needed for a user environment and ultimate login. The kernel itself is then allowed to go idle, subject to calls from other processes.
===Kernel loading stage===
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