public static unsafe BootSector BSreader(string volName)
{
SafeFileHandle handle = WindowsAPI.CreateFile
(
@"\\.\" + volName,
WindowsAPI.GENERIC_READ,
WindowsAPI.FILE_SHARE_WRITE | WindowsAPI.FILE_SHARE_READ,
0,
WindowsAPI.OPEN_EXISTING,
0,
0);
UInt32 error = WindowsAPI.GetLastError();
byte[] buffer = new byte[512];
int n = 0;
byte read = 0;
BootSector myBS = new BootSector();
if (!handle.IsInvalid)
{
WindowsAPI.OverLapped over = new WindowsAPI.OverLapped();
over.handle = IntPtr.Zero;
over.offset.offset = 0;
over.offset.offsetHigh = 0;
fixed(byte *p = buffer)
{
read = WindowsAPI.ReadFile(handle, p, 512, &n, 0);
error = WindowsAPI.GetLastError();
for (int i = 3; i < 11; i++)
{
myBS.OEMname += (char)buffer[i];
}
uint pow = 1;
uint sum = 0;
for (int i = 11; i <= 12; i++)
{
sum += pow * buffer[i];
pow *= 256;
}
myBS.BPS = sum;
pow = 1;
sum = 0;
for (int i = 13; i <= 13; i++)
{
sum += pow * buffer[i];
pow *= 256;
}
myBS.SPC = sum;
pow = 1;
sum = 0;
for (int i = 14; i <= 15; i++)
{
sum += pow * buffer[i];
pow *= 256;
}
myBS.reserved = sum;
pow = 1;
sum = 0;
for (int i = 16; i <= 16; i++)
{
sum += pow * buffer[i];
pow *= 256;
}
myBS.FATcount = sum;
pow = 1;
sum = 0;
for (int i = 21; i <= 21; i++)
{
sum += pow * buffer[i];
pow *= 256;
}
myBS.media = sum;
pow = 1;
sum = 0;
for (int i = 24; i <= 25; i++)
{
sum += pow * buffer[i];
pow *= 256;
}
myBS.SPT = sum;
pow = 1;
sum = 0;
for (int i = 32; i <= 35; i++)
{
sum += pow * buffer[i];
pow *= 256;
}
myBS.Totalsector = sum;
pow = 1;
sum = 0;
for (int i = 28; i <= 31; i++)
{
sum += pow * buffer[i];
pow *= 256;
}
myBS.hiddenSector = sum;
pow = 1;
sum = 0;
for (int i = 36; i <= 39; i++)
{
sum += pow * buffer[i];
pow *= 256;
}
myBS.FATsize = sum;
pow = 1;
sum = 0;
for (int i = 44; i < 47; i++)
{
sum += pow * buffer[i];
pow *= 256;
}
myBS.RootClus = sum;
pow = 1;
sum = 0;
for (int i = 64; i <= 64; i++)
{
sum += pow * buffer[i];
pow *= 256;
}
myBS.driveNum = sum;
pow = 1;
sum = 0;
for (int i = 67; i <= 70; i++)
{
sum += pow * buffer[i];
pow *= 256;
}
myBS.volumeID = sum;
pow = 1;
sum = 0;
for (int i = 71; i < 82; i++)
{
myBS.volLabel += (char)buffer[i];
}
}
}
return(myBS);
}
