You are unable to fix portal, they are made automatically.
It depends. What error are you getting?
Based on your description, you are probably using a texture pack, and forgot to patch the game. No worries: You can fix this easily by using MCPatcher or Optifine.
commercial portal is a portal of commercials ....
An unfinished End Portal can be found in strongholds. To find a strongholds, throw an Eye of Ender into the air (right-click). To complete the portal, insert Eyes of Ender into the slots in the portal frame.
A portal is a hole. A portal exit is where you exit out of the hole. A portal entrance is where you enter into the hole.
You need to buy Portal in order to play the mod Portal: Prelude.
unless your playing minecraft portal mod and portal
sea portal.
Charles Portal's birth name is Portal, Charles Frederick Algernon.
Yes and Portal 2.
The labyrinth is not a portal but a maze.