Unknown Board error in Arduino IDE (Arduino Nano). #arduino

If you encounter an error message in the console command with red text that says "avrdude: stk500_getsync(): not in sync: resp=0x00", it means that the bootloader needs to be burned in the Arduino Nano.

However, please be aware that this solution only applies to the unknown board issue.

*Note* "The same steps can be followed for other Arduino boards."