It is a rebellion against the ephemeral nature of modern media. Rockstar Games has updated San Andreas on Steam and the Rockstar Launcher to the point where the game is barely recognizable, stripped of its soundtrack and saddled with new bugs. The "Definitive Edition" was a disaster of broken textures and rain that looked like falling glass.
A No-CD patch is a modified game executable ( .exe file) that bypasses the SafeDisc or SecuROM disc-check routine. It doesn’t remove content or crack the game for piracy (if you already own the disc). Instead, it removes a speed bump: the requirement to have the CD in the drive. gta san andreas no cd patch best