To take an XISO and pull its loose files out (to mod the game or just audit the files):
If you are diving into the world of Xbox emulation or modding, you’ve likely hit a wall with file formats. Whether you have an (the raw Xbox DVD format) or a folder of game files, you often need a clean, repacked ISO to work with modern tools like xemu or to save space on your hard drive. Why "Repack" at All?
Converting XISO to ISO is straightforward: extract, edit if needed, and rebuild with either an Xbox-aligned xiso or a standard ISO authoring tool depending on your target. Test in your intended environment and keep originals backed up.