diff --git a/partitionmanager.cpp b/partitionmanager.cpp
index 2e90ecc..fdc3fba 100644
--- a/partitionmanager.cpp
+++ b/partitionmanager.cpp
@@ -1463,6 +1463,43 @@
 				DataManager::SetValue(TW_BACKUP_SP3_SIZE, backup_display_size);
 			}
 #endif
+		} else {
+			// Handle unmountable partitions in case we reset defaults
+			if ((*iter)->Mount_Point == "/boot") {
+				int backup_display_size = (int)((*iter)->Backup_Size / 1048576LLU);
+				DataManager::SetValue(TW_BACKUP_BOOT_SIZE, backup_display_size);
+				if ((*iter)->Backup_Size == 0) {
+					DataManager::SetValue(TW_HAS_BOOT_PARTITION, 0);
+					DataManager::SetValue(TW_BACKUP_BOOT_VAR, 0);
+				} else
+					DataManager::SetValue(TW_HAS_BOOT_PARTITION, 1);
+			} else if ((*iter)->Mount_Point == "/recovery") {
+				int backup_display_size = (int)((*iter)->Backup_Size / 1048576LLU);
+				DataManager::SetValue(TW_BACKUP_RECOVERY_SIZE, backup_display_size);
+				if ((*iter)->Backup_Size == 0) {
+					DataManager::SetValue(TW_HAS_RECOVERY_PARTITION, 0);
+					DataManager::SetValue(TW_BACKUP_RECOVERY_VAR, 0);
+				} else
+					DataManager::SetValue(TW_HAS_RECOVERY_PARTITION, 1);
+			}
+#ifdef SP1_NAME
+			if ((*iter)->Backup_Name == EXPAND(SP1_NAME)) {
+				int backup_display_size = (int)((*iter)->Backup_Size / 1048576LLU);
+				DataManager::SetValue(TW_BACKUP_SP1_SIZE, backup_display_size);
+			}
+#endif
+#ifdef SP2_NAME
+			if ((*iter)->Backup_Name == EXPAND(SP2_NAME)) {
+				int backup_display_size = (int)((*iter)->Backup_Size / 1048576LLU);
+				DataManager::SetValue(TW_BACKUP_SP2_SIZE, backup_display_size);
+			}
+#endif
+#ifdef SP3_NAME
+			if ((*iter)->Backup_Name == EXPAND(SP3_NAME)) {
+				int backup_display_size = (int)((*iter)->Backup_Size / 1048576LLU);
+				DataManager::SetValue(TW_BACKUP_SP3_SIZE, backup_display_size);
+			}
+#endif
 		}
 	}
 	DataManager::SetValue(TW_BACKUP_DATA_SIZE, data_size);