reactos/loaders/boot/osldr.txt

   1 Mem layout for osldr
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   3 0000 - 07C0 = BIOS data and stack
   4 07C0 - 1000 = Boot sector
   5 1000 - 1400 = Tempory storage for fat chains
   6 1400 - 2000 = Tempory storage for directory entries
   7 2000 - 3000 = OSLDR
   8 3000 - 5000 = FAT
   9 5000 - a000 = Kernel and modules load area
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