Svenska ElektronikForumet

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/*
Name    Offset(byte)    Size(bytes)


BS_VolLab       71      11
*/

/*
####################################################################
This field has the same definition as it does for FAT12 and FAT16
media. The only difference for FAT32 media is that the field is at a
different offset in the boot sector.
#####################################################################
Volume label. This field matches the 11-byte volume label
recorded in the root directory.
NOTE: FAT file system drivers should make sure that they update
this field when the volume label file in the root directory has its
name changed or created. The setting for this field when there is no
volume label is the string “NO NAME ”
#####################################################################
*/

#include <stdio.h>
#include <fcntl.h>
#define start 71
#define end 11

int main(int argc, char* argv[]) {
    char *buf[30];
    FILE *disk=fopen(argv[1],"rb");

    fseek(disk,start,SEEK_SET);
    fread(buf,end,1,disk);
    printf("%s\n",buf);
}

Kod: Markera allt

./a.out /dev/sdb1
NO NAME