public static bool UnmountVolume(SafeFileHandle volumeHandle)
{
uint bytesReturned;
var result = NativeInterop.DeviceIoControl(volumeHandle, NativeInterop.FSCTL_DISMOUNT_VOLUME, IntPtr.Zero, 0, IntPtr.Zero, 0, out bytesReturned, IntPtr.Zero);
return(result);
}
public static SafeFileHandle GetVolumeHandle(string drive, bool readOnly = true)
{
var path = $"\\\\.\\{drive.TrimEnd('\\')}".ToUpperInvariant();
var handle = NativeInterop.CreateFile(path, (readOnly ? FileAccess.Read : FileAccess.ReadWrite), FileShare.ReadWrite, IntPtr.Zero, FileMode.Open, 0, IntPtr.Zero);
if (handle.IsInvalid)
{
handle.Dispose();
return(null);
}
return(handle);
}
public static SafeFileHandle GetDeviceHandle(ushort diskNumber, bool readOnly = true)
{
var path = $"\\\\.\\PhysicalDrive{diskNumber}";
var handle = NativeInterop.CreateFile(path, (readOnly ? FileAccess.Read : FileAccess.ReadWrite), FileShare.ReadWrite, IntPtr.Zero, FileMode.Open, 0, IntPtr.Zero);
if (handle.IsInvalid)
{
handle.Dispose();
return(null);
}
return(handle);
}
public static bool GetDiskGeometry(ushort diskNumber, out NativeInterop.DISK_GEOMETRY geometry)
{
geometry = new NativeInterop.DISK_GEOMETRY();
var deviceHandle = GetDeviceHandle(diskNumber);
if (deviceHandle == null)
{
return(false);
}
using (deviceHandle)
{
var geometrySize = 0U;
return(NativeInterop.DeviceIoControl(deviceHandle, NativeInterop.IOCTL_DISK_GET_DRIVE_GEOMETRY, IntPtr.Zero, 0, ref geometry, (uint)Marshal.SizeOf(geometry), out geometrySize, IntPtr.Zero));
}
}
public static ushort[] GetPhysicalDiskNumbersFromDrive(string drive)
{
if (string.IsNullOrWhiteSpace(drive))
{
return(new ushort[0]);
}
var diskNumbers = new List <uint>();
var volumeHandle = GetVolumeHandle(drive);
if (volumeHandle == null)
{
return(new ushort[0]);
}
using (volumeHandle)
{
var diskExtents = new NativeInterop.VOLUME_DISK_EXTENTS();
var diskExtentsSize = 0U;
var success = NativeInterop.DeviceIoControl(volumeHandle, NativeInterop.IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, IntPtr.Zero, 0, ref diskExtents, (uint)Marshal.SizeOf(diskExtents), out diskExtentsSize, IntPtr.Zero);
if (!success || Utils.IsNullOrEmpty(diskExtents.Extents))
{
return(new ushort[0]);
}
for (var i = 0; i < diskExtents.NumberOfDiskExtents; i++)
{
diskNumbers.Add(diskExtents.Extents[i].DiskNumber);
}
return(diskNumbers.Distinct()
.Select(Convert.ToUInt16)
.OrderBy(_ => _)
.ToArray());
}
}
public static bool UnlockVolume(SafeFileHandle volumeHandle)
{
uint bytesReturned;
return(NativeInterop.DeviceIoControl(volumeHandle, NativeInterop.FSCTL_UNLOCK_VOLUME, IntPtr.Zero, 0, IntPtr.Zero, 0, out bytesReturned, IntPtr.Zero));
}