oot loaders must be able to
load images that either are in ELF format or contain the load address
information embedded in the multiboot_header; they may also directly
support other executable formats, such as particular a.out variants, but
are not required to.<P>

All of the address fields enabled by flag bit 16 are physical addresses.
The meaning of each is as follows:<P>

<UL>
<LI><B>header_addr</B> -- Contains the address corresponding to the
beginning of the multiboot_header - the physical memory locati