Basic OS boot question
assembly, bios, boot, operating-system
Solution
1) The bootloader normally contains some simple instructions to load yet more data from the disk and to execute it.
2) No,
3) To minimise the space they take up.
4) You don't.
Problem
I have some kinda basic question to the boot process of a computer and the part where the bootloader calls the OS. So I know that the BIOS copies the first 512 bytes from a bootable drive into memory and executes the code - so that's the boot block. - But how does that small assembler boot bootloader the commands from the OS? - Does the bootloader continue running and still acts as a "transmitter" between software and hardware? Or is the control completely given to the OS? - Why are all bootloaders written in assembler? - And why do you have to go back from C++ to C when writing an OS? Best regards, lamas