When you press a button on the PC to start the system. Many processes
get invoke which make operating system run. So, what happens is when you press
the power button immediately kernel present in main memory get invoke. Kernel
is main part of the operating system.
Kernel is the system code which work as translator between
hardware and operating system.
Imagine who you will use hard disk without operating system?
Can you?
In my opinion it’s not possible to interact with hard drive
we need an OS.
OS interact with kernel and kernel interact with hardware.
SO, let’s get to the point as soon as the kernel get activated,
it calls the OS file from drive into the ram.
Note: To do anything with file of your hard drive it has to be call in RAM first where it can make change you want. As we know ROM (Read Only Memory) in hard drive we can only read memory that is why we require ram to execute any task on computer.
As the OS come into
the RAM system boot up and we the screen of the Operating System.
This is how OS get boot up.
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