Reading raw data from a physical drive in windows

gistfile1.cpp

#define _CRT_SECURE_NO_WARNINGS
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <stdio.h>

int main(int argc, char *argv[])
{
    HANDLE handle = CreateFile(
        "\\\\.\\PhysicalDrive0",
        GENERIC_READ,
        FILE_SHARE_READ | FILE_SHARE_WRITE,
        NULL, // No security attributes
        OPEN_EXISTING,
        0,
        NULL
    );

    if (handle == INVALID_HANDLE_VALUE)
        return 1;

    char bootsector[512];
    DWORD bytes_read;
    ReadFile(handle, bootsector, 512, &bytes_read, NULL);
    CloseHandle(handle);

    FILE *f = fopen("bootsector.bin", "wb");
    fwrite(bootsector, 512, 1, f);
    fclose(f);

    return 0;
}