One case where it has a use is on partition (or floppy disk) boot sectors. First instruction is a jump to skip the disk metadata (actually a BIOS parameter bloc

One case where it has a use is on partition (or floppy disk) boot sectors. First instruction is a jump to skip the disk metadata (actually a BIOS parameter block), which is in a fixed place. See https://en.wikipedia.org/wiki/Volume_boot_record https://en.wikipedia.org/wiki/Volume_boot_record