nasm - boot loader disk buffer -


recently found simple source code of bootloader.the following simple 1 stage boot loader

bits 16 org 0x7c00 start:    mov ax,07c0h    add ax, 288    mov ss,ax    mov sp,4096    ...    ...

from mikeos
memory layout reserve 4kb disk buffer.
this:
start 0x7c00

|mbr(512)........|4kb disk buffer............|4kb stack .....|

what don't understand why disk buffer needed? can helps me. sorry stupid question, google long time , can not want.

the simple answer disk buffer used load first root directory , file allocation table in order load named file root directory.

the happy answer latest code available @ mikeos website.


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