Changeset 2196

Timestamp:

6/19/2010 1:29:09 AM (3 years ago)

Author:

lowjoel

Message:

Define the IOCTL_DISK_DELETE_DRIVE_LAYOUT which erases the MBR of the physical drive, allowing us to delete all partitions on the physical drive.

Location:

trunk/eraser/Eraser.Util

Files:

• NativeMethods/Kernel.cs (modified) (1 diff)
• PhysicalDriveInfo.cs (modified) (1 diff)

trunk/eraser/Eraser.Util/NativeMethods/Kernel.cs

@@ -646 +646 @@
         public const uint FSCTL_LOCK_VOLUME = 0x90018;
         public const uint FSCTL_UNLOCK_VOLUME = 0x9001C;
+        public const uint IOCTL_DISK_DELETE_DRIVE_LAYOUT =
+            (0x00000007 << 16) | ((0x01 | 0x02) << 14) | (0x0040 << 2);
 
         [DllImport("Kernel32.dll", SetLastError = true)]

trunk/eraser/Eraser.Util/PhysicalDriveInfo.cs

@@ -149 +149 @@
 
         /// <summary>
+        /// Destroys all partitioning information on the drive.
+        /// </summary>
+        public void DeleteDriveLayout()
+        {
+            //Open the drive for read/write access
+            using (SafeFileHandle handle = OpenHandle(FileAccess.ReadWrite, FileShare.ReadWrite,
+                FileOptions.None))
+            {
+                //Issue the IOCTL_DISK_DELETE_DRIVE_LAYOUT control code
+                uint returnSize = 0;
+                if (!NativeMethods.DeviceIoControl(handle,
+                    NativeMethods.IOCTL_DISK_DELETE_DRIVE_LAYOUT, IntPtr.Zero, 0, IntPtr.Zero,
+                    0, out returnSize, IntPtr.Zero))
+                {
+                    throw Win32ErrorCode.GetExceptionForWin32Error(Marshal.GetLastWin32Error());
+                }
+            }
+        }
+
+        /// <summary>
         /// Opens a file with read, write, or read/write access.
         /// </summary>