The loading of operating system code from a disk code from a disk or other storage device into a computer!|s memory. Bootstrapping is so-called because it typically occurs in steps, starting with a very simple program to read a sequence of blocks from a fixed location on a pre-determined disk into a fixed memory location. The data thus read is the code for the next stage of bootstrapping, it typically causes an operating system to be read into memory, which then begins to execute.
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