On 25.06.2011 05:35, Graeme Russ wrote: > Hi Vladimir, > > On 25/06/11 13:23, Vladimir 'φ-coder/phcoder' Serbinenko wrote: >> This is perfectly accomodated by multiboot specification. Just add a >> small structure somewhere in the first 8K of the file and your image is >> multiboot-compliant. > Thanks for the advice, but I have a few questions (please excuse any that > appear really 'newby') > > - What GRUB command(s) would I use to load & run the image multiboot+boot > - How do I specify where in memory the file is loaded? It's part of this structure. > - Is there a 'quick and dirty' document on how to create a multiboot > header which GRUB can load? > http://bzr.savannah.gnu.org/lh/grub/trunk/multiboot/annotate/head:/doc/multiboot.texi
"Multiboot header must be contained completely within the first 8192 bytes of the OS image, and must be longword (32-bit) aligned." In short your header should be (little-endian uint32_t): /* magic */ 0x1BADB002, /* flags */ 0x00010000, /* checksum */ 0xe4514ffe, header_offset+load_addr, load_addr, 0, 0, entry_addr -- Regards Vladimir 'φ-coder/phcoder' Serbinenko
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