Technical Tip : How to Enable back the console when accidentally disabled during boot up

This article describes how to enable back the Console output on the boot menu if it was accidentally disabled and the console output and cannot enter the boot menu.

Press any key to display configuration menu.

[C]: Configure TFTP parameters.
[R]: Review TFTP parameters.
[T]: Initiate TFTP firmware transfer.
[F]: Format boot device.
[B]: Boot with backup firmware and set as default.
[I]: System configuration and information.
[Q]: Quit menu and continue to boot.
[H]: Display this list of options.

Enter C,R,T,F,B,I,Q,or H:
Console output will be disabled, proceed? [Y|N]:n

Enter C,R,T,F,B,I,Q,or H:

Enter C,R,T,F,B,I,Q,or H: 

Console output will be disabled, proceed? [Y|N]: y when accidentally entered 'Yes' 

Console output disabled, please reboot to take effect.

To resolve this, the device needs to be rebooted and should press (Shift +m)

Example.

# exec reboot

This operation will reboot the system.

Do you want to continue? (y/n) y

System is rebooting.

The system is going down NOW.

Restarting system. Press (Shift +M)

Console output enabled. Press 'h' or 'H' to display the BIOS menu.