1. Connect the mouse, monitor, and your USB boot device. Press the power button on the TNAS to start it, then immediately and repeatedly press the "Esc" key to enter the BIOS setup page. If you do not successfully enter the BIOS, you can restart the TNAS and try again.
2. Once in the BIOS, switch to the Boot page and set "UTOS Boot First" to "Disabled."

3. At the bottom of the Boot page, find the "Boot Option #1" setting and change it to your USB device. Press the F4 key to save the changes.

4. Restart the TNAS, and the system will prioritize booting from the USB device you selected.







