Chandra 
Hi In my previous post, I forgot to mention that I changed the default password from "123456" to "*******" and I forgot what I changed it to. Now, I cant open anything as I dont know what my root password is. Hence, I need to either re-install the OS or somehow change the password. I tried to boot from the SD card and mount the emmc and then try to get back the passwd but it does not work. In all linux distros, there is a recovery mode option when we log in. I dont know why they disabled it in NanoPC-T1. Please help me. I am in urgent need of using NanoPC for one of my projects. Chandra