public static extern Boolean DeviceIoControl(
FileSafeHandle hDevice,
IoControlCode dwIoControlCode,
ref GrowPartition lpInBuffer,
int nInBufferSize,
IntPtr lpOutBuffer,
Int32 nOutBufferSize,
ref Int32 lpBytesReturned,
IntPtr lpOverlapped
);
private static long GrowPartition(DiskGeometry geo, DriveLayout.FileSafeHandle handle)
{
var name = "\\\\.\\PhysicalDrive0";
int bytesReturned5;
var li = GetPartition(handle, out bytesReturned5);
var currentSize = li.PartitionEntry[0].PartitionLength;
var targetSize = ((long)geo.TracksPerCylinder * (long)geo.SectorsPerTrack * (long)geo.BytesPerSector *
geo.Cylinders) - li.PartitionEntry[0].StartingOffset;
Console.WriteLine("Current Size= " + currentSize);
Console.WriteLine("Target Size=" + targetSize);
var expandBy = targetSize - currentSize;
Console.WriteLine("Need to expand by " + expandBy);
var recommendedSectors = (li.PartitionEntry[0].PartitionLength - li.PartitionEntry[0].StartingOffset) / geo.BytesPerSector;
if (expandBy == 0)
{
Console.WriteLine("Sectors: " + (li.PartitionEntry[0].PartitionLength / geo.BytesPerSector));
Console.WriteLine("Recommended sectors = " + recommendedSectors);
return(recommendedSectors);
}
GrowPartition gp = new GrowPartition()
{
BytesToGrow = expandBy,
PartitionNumber = 1
};
int bytesReturned1 = 0;
ExecuteNativeActionAndCheckLastError(() =>
{
bool w = DriveLayout.NativeMethods.DeviceIoControl(handle,
DriveLayout.NativeMethods.IoControlCode.DiskGrowPartition,
ref gp,
Marshal.SizeOf(gp),
IntPtr.Zero,
0,
ref bytesReturned1,
IntPtr.Zero);
Console.WriteLine("Grow Success: " + w);
});
Console.WriteLine("Sectors: " + (li.PartitionEntry[0].PartitionLength / geo.BytesPerSector));
Console.WriteLine("Recommended sectors = " + recommendedSectors);
return(recommendedSectors);
}