i see this error in uploading my program to arduino,however i used the same one with the windows befor
Using Port : COM20 Using Programmer : arduino Overriding Baud Rate : 115200 avrdude: ser_open(): can't open device "\\.\COM20": The system cannot find the file specified. avrdude done. Thank you. Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.