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Published on Oct 19, 2007
http://www.primotechnology.com/2007/1... * First off, backup up your entire Portal directory in a safe place. Its the folder marked portal in ..\Steam\steamapps\(your_steam_id)\. We, nor Valve, take any responsibility in the unlikely event of you hosing your game files. Worse comes to worse though, you could always just redownload from STEAM. * Next, download and install, if you havent already, GCFScape. This handy program will allow you to access the cached game files for any Source-powered game, in addition to several other Steam games you may have downloaded. * Once thats done, browse to the directory ..\Steam\steamapps\. There, youll see all the available GCF archives. Well start with Half-Life 2. * Open the GCF marked half-life 2 content.gcf Youll see a directory tree in the left pane. Click the box to the left of the folder marked hl2″ to see the directory listing contained within it. Then, right-click maps, select Extract and extract the entire folder into the directory \Steam\steamapps\(your_steam_id)\portal\portal. This will merge it with the existing Portal map folder. * Do the same with the scenes folder * Fire up Steam and run Portal. When its done doing its thing, open up the developer console with ~ (you may need to enable it under your keyboard options). * At the console, type maps to list all the available maps. Now that youve imported the Half-Life 2 maps, this will be a fairly lengthy list and some of the names, like citadel and canals, should seem familiar. * Type map and then the map name to open that map. For instance, map d1_canals_01″ * When the map is done loading, pull up the console again and enable cheats by entering sv_cheats 1″ * To give yourself all weapons, including the portal gun, enter impulse 101″ * Depending on how far you got in Portal, you may need to upgrade the portal gun to fire both portals. Enter upgrade_portalgun to do so * Go lay waste to some alien scum with the power of portals!