diff --git a/src/kits/storage/disk_device/Partition.cpp b/src/kits/storage/disk_device/Partition.cpp
index 06db7ae3b7..e97e77148c 100644
--- a/src/kits/storage/disk_device/Partition.cpp
+++ b/src/kits/storage/disk_device/Partition.cpp
@@ -1598,6 +1598,5 @@ BPartition::_IsModified() const
 	if (!fDelegate)
 		return false;
 
-	// TODO: Implement!
-	return false;
+	return fDelegate->IsModified();
 }
diff --git a/src/kits/storage/disk_device/PartitionDelegate.cpp b/src/kits/storage/disk_device/PartitionDelegate.cpp
index 111f67cc21..32ebf68b7c 100644
--- a/src/kits/storage/disk_device/PartitionDelegate.cpp
+++ b/src/kits/storage/disk_device/PartitionDelegate.cpp
@@ -118,6 +118,14 @@ BPartition::Delegate::CountChildren() const
 }
 
 
+// IsModified
+bool
+BPartition::Delegate::IsModified() const
+{
+	return fMutablePartition.ChangeFlags() != 0;
+}
+
+
 // SupportedOperations
 uint32
 BPartition::Delegate::SupportedOperations(uint32 mask)
diff --git a/src/kits/storage/disk_device/PartitionDelegate.h b/src/kits/storage/disk_device/PartitionDelegate.h
index 62123d54d2..a5b5ed2414 100644
--- a/src/kits/storage/disk_device/PartitionDelegate.h
+++ b/src/kits/storage/disk_device/PartitionDelegate.h
@@ -33,6 +33,8 @@ public:
 			Delegate*			ChildAt(int32 index) const;
 			int32				CountChildren() const;
 
+			bool				IsModified() const;
+
 			uint32				SupportedOperations(uint32 mask);
 			uint32				SupportedChildOperations(Delegate* child,
 									uint32 mask);