Using a standard tool like , the process is straightforward:

A lightweight classic that allows you to browse the contents of an ISO and extract only the folders you want.

Xbox 360 ISOs are a fixed size (roughly 7.3GB or 8.1GB). Extracting them to XEX removes dummy data, often shrinking the game to 4GB or less.

You can quickly delete unwanted system update folders or unnecessary language files to save even more space. Top Xbox 360 ISO to XEX Converters