Making a backup of a game you legally own for personal use is generally considered acceptable, but laws vary by region.
Physical media is finite. Optical discs are prone to "disc rot" (the chemical degradation of the disc layer), scratches, and laser burn. For collectors who have spent hundreds of dollars building their library, creating a digital backup in the form of an .iso file is a way to future-proof their investment. By converting the physical disc into a digital file, the game is saved from physical decay. xbox 360.iso
While some emulators like Xenia can run ISO files directly, many users prefer converting them to containers or extracting them to XEX format for use with custom dashboards like Aurora or Freestyle Dash on a modded console (RGH/JTAG). Making a backup of a game you legally