You can do it if you have evo-x on that hdd and have a program such as dvd2xbox to copy the games onto your hdd.
download a different dvd2xbox from a different place, if you still cant get it to work you can send games to your xbox hdd by -sending the game files to your pc via FTP -put the files in a folder called whatever the name of the game is -send the game folder back to your xbox in the games folder in your e folder(you will need to create the games folder) thats doing it old school
Or you could get a better program called pxhddloader(something like that anyway) i use it all the time to put games on my hdd.