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Rolling Your Own Bootloader: Difference between revisions
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→What if i get beyond the 512 bytes of the boot sector ?
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That mainly depends on what's in your kernel. Linux, for instance, requires an additional 'initrd' file that will contain the 'initialization process' (as user level). If your kernel is modular and if [[File Systems]] are understood by some modules, you need to load the modules along with the kernel. Same goes for 'microkernel services' like disk/files/memory services, etc.
=== What if
Use [[GRUB]] ;) -- nah, kidding ... just make sure the first 512 bytes are able to load the rest of your loader and you're safe. Some do this with a separate "second stage" loader, others by really inserting a '512-bytes' break in their ASM code, making sure the rest of the loader is put after the bootsector (that is, starting at 0x7e00 ;)
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