By default, the terminal displays error messages and continues to boot if it cannot locate a configuration file to download. You can configure a terminal to persist in trying to load a configuration file; in that case, the terminal does not boot until it reads a file successfully. This may be useful in certain environments, including:
To configure a terminal to persist in attempting to load a configuration file, set the config-persistent-loading parameter to "true" (Setup -> Change Setup Parameters -> Configuration -> Persistent Loading).
Table 6-4 config-persistent-loading Parameter
The X server does not persist in trying to load a configuration file after trying all the files in the specified download sequence.
The X server persists in trying to load a file, cycling through the specified download sequence until a configuration file is found.