[ubuntu] Having issue with comand promt terminal

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http://ubuntuforums.org – i have been trying to back up a couple dvds using k9copy and keep getting an error right when i open the dvd. I have tried to open the command prompt terminal to update it but when i use it i am not able to type in the letters u or o. should i just reformat my entire computer and start from the beginning? any suggestions would be great. (Hardware)