Hi, Thanks "HOLLOW". it has worked finally with your instructions above. anyway i have add another line under "[unattended]" as follows in addition to your above lines. [unattended] Repartition=No UnattendMode=FullUnattended FileSystem=* Thanks alot for spending your time for me. also thanks for "iamtheky" for trying to help me. I'm having another question, Is there any sequence that we need to arrange lines under one category? Ex.. [unattended] Repartition=No UnattendMode=FullUnattended OemSkipEula=Yes [unattended] UnattendMode=FullUnattended OemSkipEula=Yes Repartition=No Is it make any difference? i think that we need to have a sequence for categories (First [Data] second [unattended] like wise) but not for the lines under one category. pls explain. Thanks, Sathika.