So long as you have the eprom.bin backed up and copied to your PC, you can then download XBOX HD Maker, and Slayer's installer. You can grab the password for slayer's installer by paying close attention to directions, and reading the news...
Then by following the directions in the Readme.txt that came with the XBOX HD Maker, you will learn how to build and ISO, which basically consists of putting the eprom in the linux/eprom folder, and filling up C and E with the C and E from your original drive.
Once you boot this, goto the section about locking your hard drive in linux. Type lockhd, tell it you want to load from the eprom, and it will do the rest for you. After which point all you really need to do is pop the hard drive in your XBOX, set it to Master (with slave) boot up BlackWar using 007 or Mech Assault, and prepare your F drive, then FTP over what ever files you want on your XBOX. It was easy if you are familiar with what needs to be on the XBOX harddrive, and where, etc.