The function starts reading partitions information from MBR and then reads Extended MBR

 
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/* relative sectors Number of Partition */

relative_sec=*(long *)(buffer+454+i*16);

no_sectors=*(long *)(buffer+458+i*16); /* number of sectors in partition*/

sectors_part[*no_par]=no_sectors; /* Array to store Number of sectors of partitions */

*sec=star_sec[*no_par]=relative_sec;

(*no_par)++;

}

} //loop close of for(i=0;i<4;i++)

} //loop close of if(*sec==0)

return;
}

Comments on coding:

The function starts reading the partitions information from the MBR and then reads the Extended MBRs if required. The function readabsolutesectors reads the absolute sector, specified by *sec.

sectors_part[*no_par] is the array to store the number of sectors of partitions. The partition number is specified by *no_par starting from 0.

no_sectors is the number of sectors in partition and relative_sec is the relative sector number for that partition.

star_sec[*no_par] is the array to store the stating sector numbers of partitions. The partition number is specified by *no_par starting from 0.

star_cyl, star_hea and star_sec are the arrays which keep the information of starting of each partition in terms of CHS. star_cyl stores the information of starting cylinders, star_hea stores the information of starting heads and star_sec stores the information of starting sectors of partitions.

For the description of readabsolutesectors function refer the chapters given earlier in this book.

 

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Data Recovery with & without Programming


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BPB Publications, New Delhi, India
540
81-7656-922-4
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