HOW TO LAUNCH BLACK MESA INSTALLED IN OTHER FOLDER THEN STEAM:[/SIZE]
Assume you have Steam installed in: D:\Games\Steam
Assume your Steam user name is: Your_Steam_Username
Assume you have game installed in: D:\Games\Black Mesa
To lauch the game in command line you should type:
“[COLOR=‘Yellow’]D:\Games\Steam\steamapps[COLOR=‘Cyan’]Your_Steam_Username\source sdk base 2007\hl2.exe” -game sourcetest -steam -game “[COLOR=‘Yellow’]D:\Games\Black Mesa”
If you are not familiar with command line you can create shortcut on desktop to hl2.exe by finding the file in your system (path can be different depends on when you got Steam installed) and then right click on it, chose sub-menu Sent to then chose Desktop (create shortcut). After you done that, right click on newly created shortcut, chose Properties (properties windows will appear) and then change Target field with launch command from above.
Of course you have to change paths if you got them installed in other folders.