Which platform are you planning to post this on so I can for you?
Since the original Xbox only has an 8GB or 10GB drive, you’ll likely need an SATA-to-IDE adapter and a larger 3.5" HDD to store multiple game ISOs. 4. The Connection "Piece": Modern Video Output xbox classic iso
Even with the right files, things go wrong. Here are the most frequent issues: Which platform are you planning to post this