How to search each sector in harddisk with using C

Hi all,
i have some problem with blocks/sectors in harddisk, i need to rectify some bad sectors in disk.how can read each sector/block with using the C?
if u knw, could u pls send the procedure for this problem ...

cheers
preeth
preethAsked:
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sunnycoderCommented:
>i have some problem with blocks/sectors in harddisk, i need to rectify some bad sectors in disk.
I suggest that you use fsck instead
scnCommented:
To read sector sectorNo of an hard disk called /dev/hda and having sectors of 512 bytes (e.g. ide disks) :
 
fd = open("/dev/hda", O_RDONLY);
lseek(fd, sectorNo * 512, SEEK_SET);
read(fd, buffer, 512);

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