@Alienator Can you please tell me Which files i have to hack. IMO there are some files which are responsible for core installation(?) --- SETUPAPI.DLL, SETUPLDR.DLL, SYSSETUP.DLL, Shell32.DLL. Again In the process after the copying the required files to the HDD, computer restarts and Shell32.dll, Setupapi.dll, sysset.dll in action, so i think i have force the system( these dll's)installer to invoke a dialog box to come out and ask for said location & keep the answer. But i m in dillemma actually which file i have to hack and where? if you have any idea please let me know