 Within the OS image file, the header must be in the first 8192 (2¹³) bytes for Multiboot and 32768 (2¹⁵) bytes for Multiboot2.The loader searches for a magic number to find the header, which is 0x1BADB002 for Multiboot and 0xE85250D6 for Multiboot2.In the header, codice_1 points to the code where control is handed over to the OS.