Penguin
Annotated edit history of BootSector version 1, including all changes. View license author blame.
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1 PerryLorier 1 The first sector on any disk. It's called the boot sector because the PC [BIOS] checks to see if the last two bytes of it are 0x55AA and if so hands control off to any code that happens to be in that sector, normally this code loads the [OS] off the rest of the disk and starts it, although floppies without an [OS] on them usually display an error message asking you to replace the disk.