Where are the Windows (and other OS) files that are used when turned on?

Question

Windows

And so the PC turns on, the hardware is tested, the BIOS is loaded, the bootloader, the OS kernel, the necessary files are copied to the RAM. Where are these files located? Near? And if they are scattered, is it possible to put them one after another so that the head moves less and the OS boot speed increases?

Answer 1

scattered throughout the file structure of the disk.
the kernel after self-test starts the initialization system, for * nix systems it is the executable file /sbin/init, loads the libraries necessary for operation.
after which init, according to its settings, starts loading services (as well as libraries and other resources they need) into memory, which lie along their paths in the root file system.
to speed up this download, the ureadhead service is used, which reads the necessary files into memory, as well as many other tricks.
One of the options for such acceleration in Windows is the Prefetch mode
. Another option for accelerating boot is to use hibernation instead of shutdown.

Answer 2

Buy an SSD already for yourself - today it is quite possible to buy a more or less decent SSD for sane money.

Answer 3

It's useless, buy an ssd or boot from a flash drive