I have an Adtran 1638 that is booting from the USB drive rather from its internal flash. Here is its behavior.
- When I pull the USB, the unit boots to default settings.
- When I leave the USB in, it boots correctly and I am able to download the config from the GUI. When I pull the USB, I am no longer able to download the config.
Is there a setting somewhere that tells the unit to boot from my USB drive rather than its internal flash?