A No-CD patch typically replaces the original game executable (e.g., DesertStorm2.exe ) with a version where the "Insert Disc" check has been "NOP-ed" (no-operation) or jumped over in the code.
: Allows the game to run directly from the local hard drive without needing a virtual drive or ISO mounting software like DAEMON Tools Portability conflict desert storm 2 no cd patch
The risk of malware is too high for a 20-year-old game. A No-CD patch typically replaces the original game