sd card not work, cant find the file or directory in browser

Hi everyone, i am working on a project on Arduino Yun. I need to send web page to web browser (client). I followed many youtube tutorial for sending web page from sd card. But in my case i am not able to browse web page on browser, it gives error "No such files or directory". In putty SSH window i am able to all necessary files in path (/mnt/sda1/arduino/www/YUNtest) . Mine YUN Arduino OS version 2.03 .Please help me