如何写磁盘指定扇区

[yw1621]

各位高手,请问如何用程序写磁盘指定扇区??

[yw1621]

请各位大侠帮帮小弟了,谢谢了!!!

[yw1621]

不是吧,这个问题没人会啊

[yw1621]

up

[Flood1984]

想做启动盘是不？

[yw1621]

是的

[yw1621]

C应该是可以写磁盘指定扇区的,到底该怎么写啊???
上学时没教啊

[yw1621]

快快

[柯本]

与系统有关,纯dos下,用TC:

absread and abswrite absread reads absolute disk sectors
abswrite writes absolute disk sectors
(Not available under MS-Windows.)

Syntax:
int absread(int drive, int nsects, long lsect, void *buffer);
int abswrite(int drive, int nsects, long lsect, void *buffer);

Prototype in:
dos.h

■ drive is 0 = A, 1 = B, 2 = C, etc.
■ nsects is the number of sectors to read/write
■ lsect is starting logical sector (0 is first)
■ buffer is address of data area.

The number of sectors to read or write is limited to the amount of memory in
the segment above the buffer.

64K is the largest amount of memory per call that can be read in or written.

Returns 0 for success; on error, returns -1 and sets errno.

[柯本]

#include <stdio.h>
#include <conio.h>
#include <process.h>
#include <dos.h>

int main(void)
{
int i, strt, ch_out, sector;
char buf[512]; /* 将要写的放入buf */

printf("Insert a diskette into drive A and press any key\n");
getch();
sector = 0;
if (abswrite(0, 1, sector, &buf) != 0)
{
perror("Disk problem");
exit(1);
}
printf("Write OK\n");
return(0);
}

[柯本]

windows 2000下

http://dev.csdn.net/article/48/48903.shtm

[yw1621]

多谢各位了