EXFO FTB-200 v2 Compact Modular Platform - Manual (Page 208)

Troubleshooting
198 FTB-200 v2
Restoring Your Unit to Normal Operation
To verify disk integrity:
1. Turn on the FTB-200 v2.
2. While the system is displaying the boot menu (3 seconds), press
from the unit’s keypad to select the Maintenance and
recovery mode.
OR
Press the ARROW DOWN key on the keyboard (if you have connected
one).
3. Press the unit’s knob or ENTER on your keyboard to confirm your
choice.
Note: The touchscreen becomes effective at this point.
4. From the main window, select Check disk integrity, then tap Next.