diff --git a/src/main/scala/li/cil/oc/Settings.scala b/src/main/scala/li/cil/oc/Settings.scala
index 1f70c1a04..c8ef19d48 100644
--- a/src/main/scala/li/cil/oc/Settings.scala
+++ b/src/main/scala/li/cil/oc/Settings.scala
@@ -12,7 +12,6 @@ import com.mojang.authlib.GameProfile
 import com.typesafe.config._
 import li.cil.oc.Settings.DebugCardAccess
 import li.cil.oc.common.Tier
-import li.cil.oc.integration.Mods
 import li.cil.oc.server.component.DebugCard
 import li.cil.oc.server.component.DebugCard.AccessContext
 import org.apache.commons.codec.binary.Hex
diff --git a/src/main/scala/li/cil/oc/client/GuiHandler.scala b/src/main/scala/li/cil/oc/client/GuiHandler.scala
index f003525f0..180e2cfad 100644
--- a/src/main/scala/li/cil/oc/client/GuiHandler.scala
+++ b/src/main/scala/li/cil/oc/client/GuiHandler.scala
@@ -7,8 +7,7 @@ import li.cil.oc.api
 import li.cil.oc.common.GuiType
 import li.cil.oc.common.component
 import li.cil.oc.common.entity
-import li.cil.oc.common.inventory.DatabaseInventory
-import li.cil.oc.common.inventory.ServerInventory
+import li.cil.oc.common.inventory.{DatabaseInventory, DiskDriveMountableInventory, ServerInventory}
 import li.cil.oc.common.item
 import li.cil.oc.common.item.Delegator
 import li.cil.oc.common.tileentity
@@ -57,6 +56,13 @@ object GuiHandler extends CommonGuiHandler {
 
               override def isUsableByPlayer(player: EntityPlayer) = t.isUsableByPlayer(player)
             }, Option(t), slot)
+          case t: tileentity.Rack if id == GuiType.DiskDriveMountableInRack.id =>
+            val slot = GuiType.extractSlot(y)
+            new gui.DiskDrive(player.inventory, new DiskDriveMountableInventory {
+              override def container: ItemStack = t.getStackInSlot(slot)
+
+              override def isUsableByPlayer(player: EntityPlayer): Boolean = t.isUsableByPlayer(player)
+            })
           case t: tileentity.Waypoint if id == GuiType.Waypoint.id =>
             new gui.Waypoint(t)
           case _ => null
@@ -101,6 +107,11 @@ object GuiHandler extends CommonGuiHandler {
               new gui.Tablet(player.inventory, item.Tablet.get(stack, player))
             }
             else null
+          case Some(_: item.DiskDriveMountable) if id == GuiType.DiskDriveMountable.id =>
+            new gui.DiskDrive(player.inventory, new DiskDriveMountableInventory {
+              override def container = itemStackInUse
+              override def isUsableByPlayer(activePlayer : EntityPlayer): Boolean = activePlayer == player
+            })
           case Some(terminal: item.Terminal) if id == GuiType.Terminal.id =>
             val stack = itemStackInUse
             if (stack.hasTagCompound) {
diff --git a/src/main/scala/li/cil/oc/client/gui/DiskDrive.scala b/src/main/scala/li/cil/oc/client/gui/DiskDrive.scala
index 6d12a042d..14ab5bd7e 100644
--- a/src/main/scala/li/cil/oc/client/gui/DiskDrive.scala
+++ b/src/main/scala/li/cil/oc/client/gui/DiskDrive.scala
@@ -2,10 +2,10 @@ package li.cil.oc.client.gui
 
 import li.cil.oc.Localization
 import li.cil.oc.common.container
-import li.cil.oc.common.tileentity
 import net.minecraft.entity.player.InventoryPlayer
+import net.minecraft.inventory.IInventory
 
-class DiskDrive(playerInventory: InventoryPlayer, val drive: tileentity.DiskDrive) extends DynamicGuiContainer(new container.DiskDrive(playerInventory, drive)) {
+class DiskDrive(playerInventory: InventoryPlayer, val drive: IInventory) extends DynamicGuiContainer(new container.DiskDrive(playerInventory, drive)) {
   override def drawSecondaryForegroundLayer(mouseX: Int, mouseY: Int) = {
     super.drawSecondaryForegroundLayer(mouseX, mouseY)
     fontRenderer.drawString(
diff --git a/src/main/scala/li/cil/oc/common/GuiHandler.scala b/src/main/scala/li/cil/oc/common/GuiHandler.scala
index c4c6a2c1b..90c6fe3ab 100644
--- a/src/main/scala/li/cil/oc/common/GuiHandler.scala
+++ b/src/main/scala/li/cil/oc/common/GuiHandler.scala
@@ -1,11 +1,10 @@
 package li.cil.oc.common
 
-import li.cil.oc.common.inventory.DatabaseInventory
-import li.cil.oc.common.inventory.ServerInventory
+import li.cil.oc.common.inventory.{DatabaseInventory, DiskDriveMountableInventory, ServerInventory}
 import li.cil.oc.common.item.Delegator
-import li.cil.oc.server.component.Server
 import li.cil.oc.util.BlockPosition
 import li.cil.oc.util.ExtendedWorld._
+import li.cil.oc.server.component.{DiskDriveMountable, Server}
 import net.minecraft.entity.player.EntityPlayer
 import net.minecraft.item.ItemStack
 import net.minecraft.world.World
@@ -42,6 +41,10 @@ abstract class GuiHandler extends IGuiHandler {
             val slot = GuiType.extractSlot(y)
             val server = t.getMountable(slot).asInstanceOf[Server]
             new container.Server(player.inventory, server, Option(server))
+          case t: tileentity.Rack if id == GuiType.DiskDriveMountableInRack.id =>
+            val slot = GuiType.extractSlot(y)
+            val drive = t.getMountable(slot).asInstanceOf[DiskDriveMountable]
+            new container.DiskDrive(player.inventory, drive)
           case _ => null
         }
       case Some(GuiType.Category.Entity) =>
@@ -71,6 +74,12 @@ abstract class GuiHandler extends IGuiHandler {
               new container.Tablet(player.inventory, item.Tablet.get(stack, player))
             else
               null
+          case Some(drive: item.DiskDriveMountable) if id == GuiType.DiskDriveMountable.id =>
+            new container.DiskDrive(player.inventory, new DiskDriveMountableInventory {
+              override def container: ItemStack = itemStackInUse
+
+              override def isUsableByPlayer(player: EntityPlayer) = player == player
+            })
           case _ => null
         }
       }
diff --git a/src/main/scala/li/cil/oc/common/GuiType.scala b/src/main/scala/li/cil/oc/common/GuiType.scala
index a1fae72ae..ee001fc5b 100644
--- a/src/main/scala/li/cil/oc/common/GuiType.scala
+++ b/src/main/scala/li/cil/oc/common/GuiType.scala
@@ -20,6 +20,8 @@ object GuiType extends ScalaEnum {
   val Database = new EnumVal { def name = "Database"; def subType = GuiType.Category.Item }
   val Disassembler = new EnumVal { def name = "Disassembler"; def subType = GuiType.Category.Block }
   val DiskDrive = new EnumVal { def name = "DiskDrive"; def subType = GuiType.Category.Block }
+  val DiskDriveMountable = new EnumVal { def name = "DiskDriveMountable"; def subType = GuiType.Category.Item }
+  val DiskDriveMountableInRack = new EnumVal { def name = "DiskDriveMountableInRack"; def subType = GuiType.Category.Block }
   val Drive = new EnumVal { def name = "Drive"; def subType = GuiType.Category.Item }
   val Drone = new EnumVal { def name = "Drone"; def subType = GuiType.Category.Entity }
   val Manual = new EnumVal { def name = "Manual"; def subType = GuiType.Category.None }
diff --git a/src/main/scala/li/cil/oc/common/container/DiskDrive.scala b/src/main/scala/li/cil/oc/common/container/DiskDrive.scala
index 90855ae0b..8a2c4b3fb 100644
--- a/src/main/scala/li/cil/oc/common/container/DiskDrive.scala
+++ b/src/main/scala/li/cil/oc/common/container/DiskDrive.scala
@@ -1,10 +1,10 @@
 package li.cil.oc.common.container
 
 import li.cil.oc.common.Slot
-import li.cil.oc.common.tileentity
 import net.minecraft.entity.player.InventoryPlayer
+import net.minecraft.inventory.IInventory
 
-class DiskDrive(playerInventory: InventoryPlayer, drive: tileentity.DiskDrive) extends Player(playerInventory, drive) {
+class DiskDrive(playerInventory: InventoryPlayer, drive: IInventory) extends Player(playerInventory, drive) {
   addSlotToContainer(80, 35, Slot.Floppy)
   addPlayerInventorySlots(8, 84)
 }
diff --git a/src/main/scala/li/cil/oc/common/inventory/DiskDriveMountableInventory.scala b/src/main/scala/li/cil/oc/common/inventory/DiskDriveMountableInventory.scala
new file mode 100644
index 000000000..055fc341f
--- /dev/null
+++ b/src/main/scala/li/cil/oc/common/inventory/DiskDriveMountableInventory.scala
@@ -0,0 +1,21 @@
+package li.cil.oc.common.inventory
+
+import li.cil.oc.api.Driver
+import li.cil.oc.common.tileentity
+import li.cil.oc.common.Slot
+import net.minecraft.item.ItemStack
+
+trait DiskDriveMountableInventory extends ItemStackInventory {
+  def tier: Int = 1
+
+  override def getSizeInventory = 1
+
+  override protected def inventoryName = "DiskDrive"
+
+  override def getInventoryStackLimit = 1
+
+  override def isItemValidForSlot(slot: Int, stack: ItemStack): Boolean = (slot, Option(Driver.driverFor(stack, classOf[tileentity.DiskDrive]))) match {
+    case (0, Some(driver)) => driver.slot(stack) == Slot.Floppy
+    case _ => false
+  }
+}
diff --git a/src/main/scala/li/cil/oc/common/item/DiskDriveMountable.scala b/src/main/scala/li/cil/oc/common/item/DiskDriveMountable.scala
index 9debd5678..5f275155a 100644
--- a/src/main/scala/li/cil/oc/common/item/DiskDriveMountable.scala
+++ b/src/main/scala/li/cil/oc/common/item/DiskDriveMountable.scala
@@ -1,3 +1,21 @@
 package li.cil.oc.common.item
 
-class DiskDriveMountable(val parent: Delegator) extends traits.Delegate
+import li.cil.oc.OpenComputers
+import li.cil.oc.common.GuiType
+import net.minecraft.entity.player.EntityPlayer
+import net.minecraft.item.ItemStack
+import net.minecraft.util.{ActionResult, EnumActionResult, EnumHand}
+import net.minecraft.world.World
+
+class DiskDriveMountable(val parent: Delegator) extends traits.Delegate {
+  override def maxStackSize = 1
+
+  override def onItemRightClick(stack: ItemStack, world: World, player: EntityPlayer) = {
+    // Open the GUI immediately on the client, too, to avoid the player
+    // changing the current slot before it actually opens, which can lead to
+    // desynchronization of the player inventory.
+    player.openGui(OpenComputers, GuiType.DiskDriveMountable.id, world, 0, 0, 0)
+    player.swingArm(EnumHand.MAIN_HAND)
+    ActionResult.newResult(EnumActionResult.SUCCESS, stack)
+  }
+}
diff --git a/src/main/scala/li/cil/oc/common/tileentity/Robot.scala b/src/main/scala/li/cil/oc/common/tileentity/Robot.scala
index 2414408cd..5ab733c9b 100644
--- a/src/main/scala/li/cil/oc/common/tileentity/Robot.scala
+++ b/src/main/scala/li/cil/oc/common/tileentity/Robot.scala
@@ -275,7 +275,7 @@ class Robot extends traits.Computer with traits.PowerInformation with traits.Rot
       else {
         getWorld.setBlockToAir(newPosition)
       }
-      created && this.position == newPosition
+      created && this.pos == newPosition
     }
     finally {
       blockRobotProxy.moving.set(None)
diff --git a/src/main/scala/li/cil/oc/server/component/DiskDriveMountable.scala b/src/main/scala/li/cil/oc/server/component/DiskDriveMountable.scala
index b312b410d..1ce4946a1 100644
--- a/src/main/scala/li/cil/oc/server/component/DiskDriveMountable.scala
+++ b/src/main/scala/li/cil/oc/server/component/DiskDriveMountable.scala
@@ -2,10 +2,9 @@ package li.cil.oc.server.component
 
 import java.util
 
-import li.cil.oc.Constants
+import li.cil.oc.{Constants, OpenComputers, api}
 import li.cil.oc.api.driver.DeviceInfo.DeviceAttribute
 import li.cil.oc.api.driver.DeviceInfo.DeviceClass
-import li.cil.oc.api
 import li.cil.oc.api.Driver
 import li.cil.oc.api.component.RackBusConnectable
 import li.cil.oc.api.component.RackMountable
@@ -20,8 +19,7 @@ import li.cil.oc.api.network.Node
 import li.cil.oc.api.network.Visibility
 import li.cil.oc.api.prefab
 import li.cil.oc.api.prefab.AbstractManagedEnvironment
-import li.cil.oc.common.Slot
-import li.cil.oc.common.Sound
+import li.cil.oc.common.{GuiType, Slot, Sound}
 import li.cil.oc.common.inventory.ComponentInventory
 import li.cil.oc.common.inventory.ItemStackInventory
 import li.cil.oc.util.BlockPosition
@@ -182,7 +180,11 @@ class DiskDriveMountable(val rack: api.internal.Rack, val slot: Int) extends Abs
       }
       isDiskInDrive || isHoldingDisk
     }
-    else false
+    else {
+      val position = BlockPosition(rack)
+      player.openGui(OpenComputers, GuiType.DiskDriveMountableInRack.id, rack.world, position.x, GuiType.embedSlot(position.y, slot), position.z)
+      true
+    }
   }
 
   // ----------------------------------------------------------------------- //
diff --git a/src/main/scala/li/cil/oc/util/InventoryUtils.scala b/src/main/scala/li/cil/oc/util/InventoryUtils.scala
index 9d7b7e6a1..326c923dc 100644
--- a/src/main/scala/li/cil/oc/util/InventoryUtils.scala
+++ b/src/main/scala/li/cil/oc/util/InventoryUtils.scala
@@ -48,7 +48,7 @@ object InventoryUtils {
   def inventoryAt(position: BlockPosition, side: EnumFacing): Option[IItemHandler] = position.world match {
     case Some(world) if world.blockExists(position) => world.getTileEntity(position) match {
       case tile: TileEntity if tile.hasCapability(CapabilityItemHandler.ITEM_HANDLER_CAPABILITY, side) => Option(tile.getCapability(CapabilityItemHandler.ITEM_HANDLER_CAPABILITY, side))
-      case tile: IInventory => Option(asItemHandler(tile))
+      case tile: IInventory => Option(asItemHandler(tile, side))
       case _ => world.getEntitiesWithinAABB(classOf[Entity], position.bounds)
         .filter(e => !e.isDead && e.hasCapability(CapabilityItemHandler.ITEM_HANDLER_CAPABILITY, side))
         .map(_.getCapability(CapabilityItemHandler.ITEM_HANDLER_CAPABILITY, side))