Thanks for help First, i cant measure the voltage, but i assume theres a voltage because the LED goes up. ls /dev/sd* returned : No such file or directory ls/usr/local/sbin/i2* Returned: No such file or directory BTW IOerror is input output, so i think it gives the error because my flashdrive can't be read. Only an idea maybe im talkin complete ****, but im learning java, C, linux and all the shizzle on school right now Thanks again