private static ulong GetSystemDriveSerialNumber()
{
char systemDriveLetter = Environment.SystemDirectory[0];
string numberAsHexString;
using (var dsk = new ManagementObject(@"Win32_LogicalDisk.DeviceID=""" + systemDriveLetter + @":"""))
{
dsk.Get();
numberAsHexString = dsk["VolumeSerialNumber"].ToString();
}
if (!HexString.IsMatch(numberAsHexString))
{
throw new ArgumentException(string.Format("Serial number for volume {0} isn't a valid hexadecimal string ({1})", systemDriveLetter, numberAsHexString));
}
return(Convert.ToUInt64(numberAsHexString, 16));
}