Rolling Your Own Bootloader: Difference between revisions

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=== What if I get beyond the 512 bytes of the boot sector ? ===
=== What if I get beyond the 512 bytes of the boot sector ? ===


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 ;)
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 ;)


=== What if I wish to offer the user the option to boot several OSes ? ===
=== What if I wish to offer the user the option to boot several OSes ? ===
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