public unsafe void ReadSector(Int64 sector, ulong count, IntPtr buffer)
{
uint n = 0;
Win32API.OVERLAPPED ov = new Win32API.OVERLAPPED();
UInt64 q = (UInt64)sector * bootb.BytesPerSector;
ov.OffsetHigh = (uint)(q & 0xffffffff00000000);
ov.Offset = (uint)(q & 0x00000000ffffffff);
Win32API.ReadFile(hVolume, buffer, (uint)count * bootb.BytesPerSector, ref n, ref ov);
//System.Threading.NativeOverlapped ov = new System.Threading.NativeOverlapped();
//ov.OffsetHigh = (int)(q & 0x0000ffff);
//ov.OffsetLow = (int)(q & 0xffff0000);
//IntPtr pov = Marshal.AllocHGlobal(Marshal.SizeOf(ov));
//Win32API.ZeroMemory(pov, Marshal.SizeOf(ov));
//Marshal.StructureToPtr(Marshal.SizeOf(ov), pov, true);
//Win32API.ReadFile(hVolume, buffer, (uint)count * bootb.BytesPerSector, ref n, pov);
//System.Threading.NativeOverlapped ov = new System.Threading.NativeOverlapped();
//UInt64 q = (UInt64)sector * bootb.BytesPerSector;
//ov.OffsetHigh = (int)(q & 0xffffffff00000000);
//ov.OffsetLow = (int)(q & 0x00000000ffffffff);
//Win32API.ReadFile(hVolume, buffer, (uint)count * bootb.BytesPerSector, IntPtr.Zero, &ov);
}
public unsafe void ReadSector(Int64 sector, ulong count, IntPtr buffer)
{
uint n = 0;
Win32API.OVERLAPPED ov = new Win32API.OVERLAPPED();
UInt64 q = (UInt64)sector * bootb.BytesPerSector;
ov.OffsetHigh = (uint)(q & 0xffffffff00000000);
ov.Offset = (uint)(q & 0x00000000ffffffff);
Win32API.ReadFile(hVolume, buffer, (uint)count * bootb.BytesPerSector, ref n, ref ov);
//System.Threading.NativeOverlapped ov = new System.Threading.NativeOverlapped();
//ov.OffsetHigh = (int)(q & 0x0000ffff);
//ov.OffsetLow = (int)(q & 0xffff0000);
//IntPtr pov = Marshal.AllocHGlobal(Marshal.SizeOf(ov));
//Win32API.ZeroMemory(pov, Marshal.SizeOf(ov));
//Marshal.StructureToPtr(Marshal.SizeOf(ov), pov, true);
//Win32API.ReadFile(hVolume, buffer, (uint)count * bootb.BytesPerSector, ref n, pov);
//System.Threading.NativeOverlapped ov = new System.Threading.NativeOverlapped();
//UInt64 q = (UInt64)sector * bootb.BytesPerSector;
//ov.OffsetHigh = (int)(q & 0xffffffff00000000);
//ov.OffsetLow = (int)(q & 0x00000000ffffffff);
//Win32API.ReadFile(hVolume, buffer, (uint)count * bootb.BytesPerSector, IntPtr.Zero, &ov);
}