Navigate to your root folder (e.g., C:\Program Files (x86)\Rockstar Games\GTA San Andreas ). Rename gta_sa.exe to gta_sa_old.exe . Never delete the original; some mod installers look for it.
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safely and legally, experts recommend these official methods: 7 Launcher Gta San Andreas
For a technical tutorial on how to use DYOM to build your own multi-mission storyline: Navigate to your root folder (e