mbr对应什么引导模式，bios设置mbr引导

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MBR 主导程序源理解 序 参考链接 关于在整个启动程序期间与MCBR指导方案的关系的简要说明 输入 BIOS 启动磁盘 。 从引导磁盘的第一段获取 MBR 数据 。 本页是2011年马拉维大选特别报导的一部分。 源码解读 `00000000 EB63 jmp short 0x65` `00000065 FA cli` `00000066 90 nop` `00000067 90 nop` `00000068 F6C280 test dl,0x80` `0000006B 7405 jz 0x72` `00000072 B280 mov dl,0x80` `00000074 EA797C0000 jmp word 0x0:0x7c79` `00000079 31C0 xor ax,ax` `0000007B 8ED8 mov ds,ax` `0000007D 8ED0 mov ss,ax` `0000007F BC0020 mov sp,0x2000` `00000082 FB sti` `00000083 A0647C mov al,[0x7c64]` `00000086 3CFF cmp al,0xff` `00000088 7402 jz 0x8c` `0000008C 52 push dx` `0000008D BE057C mov si,0x7c05` `00000090 B441 mov ah,0x41` `00000092 BBAA55 mov bx,0x55aa` `00000095 CD13 int 0x13` API 描述: 13Hah=41H 例行行刑中断前 13Hah=41H "在13Hah=41H 常规执行过程中断" 13HA=41H 常规执行中断后 `00000097 5A pop dx` `00000098 52 push dx` `00000099 723D jc 0xd8` `0000009B 81FB55AA cmp bx,0xaa55` `0000009F 7537 jnz 0xd8` `000000A1 83E101 and cx,byte +0x1` `000000A4 7432 jz 0xd8` `000000A6 31C0 xor ax,ax` `000000A8 894404 mov [si+0x4],ax` `000000AB 40 inc ax` `000000AC 8844FF mov [si-0x1],al` `000000AF 894402 mov [si+0x2],ax` `000000B2 C7041000 mov word [si],0x10` `000000B6 668B1E5C7C mov ebx,[0x7c5c]` `000000BB 66895C08 mov [si+0x8],ebx` `000000BF 668B1E607C mov ebx,[0x7c60]` `000000C4 66895C0C mov [si+0xc],ebx` `000000C8 C744060070 mov word [si+0x6],0x7000` `000000CD B442 mov ah,0x42` `000000CF CD13 int 0x13` `000000D1 7205 jc 0xd8` `000000D3 BB0070 mov bx,0x7000` `000000D6 EB76 jmp short 0x14e` `0000014E 60 pushaw` `0000014F 1E push ds` `00000150 B90001 mov cx,0x100` `00000153 8EDB mov ds,bx` `00000155 31F6 xor si,si` `00000157 BF0080 mov di,0x8000` `0000015A 8EC6 mov es,si` `0000015C FC cld` `0000015D F3A5 rep movsw` `0000015F 1F pop ds` `00000160 61 popaw` `00000161 FF265A7C jmp word [0x7c5a]` 通过绿色区块识别,由上述MCBR试点方案执行的命令

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