diff --git a/src/add-ons/disk_systems/gpt/GPTDiskAddOn.cpp b/src/add-ons/disk_systems/gpt/GPTDiskAddOn.cpp
index 1903f84dea..f0ac78d925 100644
--- a/src/add-ons/disk_systems/gpt/GPTDiskAddOn.cpp
+++ b/src/add-ons/disk_systems/gpt/GPTDiskAddOn.cpp
@@ -139,6 +139,7 @@ GPTDiskAddOn::Initialize(BMutablePartition* partition, const char* name,
 	partition->SetContentParameters(NULL);
 	partition->SetContentSize(
 		round_down(partition->Size(), partition->BlockSize()));
+	partition->Changed(B_PARTITION_CHANGED_INITIALIZATION);
 
 	*_handle = handle;
 	return B_OK;
diff --git a/src/add-ons/disk_systems/intel/ExtendedPartitionAddOn.cpp b/src/add-ons/disk_systems/intel/ExtendedPartitionAddOn.cpp
index 3145d8cc99..88923bb32d 100644
--- a/src/add-ons/disk_systems/intel/ExtendedPartitionAddOn.cpp
+++ b/src/add-ons/disk_systems/intel/ExtendedPartitionAddOn.cpp
@@ -141,6 +141,7 @@ ExtendedPartitionAddOn::Initialize(BMutablePartition* partition,
 	partition->SetContentParameters(NULL);
 	partition->SetContentSize(
 		sector_align(partition->Size(), partition->BlockSize()));
+	partition->Changed(B_PARTITION_CHANGED_INITIALIZATION);
 
 	*_handle = handleDeleter.Detach();
 
diff --git a/src/add-ons/disk_systems/intel/PartitionMapAddOn.cpp b/src/add-ons/disk_systems/intel/PartitionMapAddOn.cpp
index f75ee09d02..22a80326e3 100644
--- a/src/add-ons/disk_systems/intel/PartitionMapAddOn.cpp
+++ b/src/add-ons/disk_systems/intel/PartitionMapAddOn.cpp
@@ -140,6 +140,7 @@ PartitionMapAddOn::Initialize(BMutablePartition* partition, const char* name,
 	partition->SetContentParameters(NULL);
 	partition->SetContentSize(
 		sector_align(partition->Size(), partition->BlockSize()));
+	partition->Changed(B_PARTITION_CHANGED_INITIALIZATION);
 
 	*_handle = handleDeleter.Detach();