private void migrateFreespace(FreespaceManager oldFreespaceManager) { FreespaceManager newFreespaceManager = AbstractFreespaceManager.createNew(this, configImpl().freespaceSystem()); newFreespaceManager.start(0); systemData().freespaceSystem(configImpl().freespaceSystem()); installFreespaceManager(newFreespaceManager); AbstractFreespaceManager.migrate(oldFreespaceManager, newFreespaceManager); _fileHeader.writeVariablePart(this); }