Here is an example of how the boot image would look for Linux:
0x1B031336, /* magic number */ 0x4, /* length of header is 16 bytes, no vendor info */ 0x90000000, /* location in ds:bx format */ 0x90000200, /* execute address in cs:ip format */ /* 2048 setup.S bytes */ 0x4, /* flags, not end, absolute address, 16 bytes this record, no vendor info */ 0x90200, /* load address - note format */ 0x800, /* 4 8 512 byte blocks for linux */ 0x800, /* kernel image */ 0x4, /* flags, not end, absolute address, 16 bytes this record, no vendor info */ 0x10000, /* load address - note format */ 0x80000, /* 512K (this could be shorter */ 0x80000, /* ramdisk for root file system */ 0x04000004, /* flags = last, absolute address, 16 bytes this record, no vendor info *// 0x100000, /* load address - in extended memory */ 0x80000, /* 512K for instance */ 0x80000, /* Then follows linux specific information */