You can't have a Zelda game without the Master Sword, Link's iconic blade. Once again, you'll wield this powerful weapon in Nintendo's The Legend of Zelda: A Link Between Worlds, after you make due with the much weaker Forgotten Sword. But where is the Master Sword, and how do you upgrade it? Don't worry. We have all the info right here.
Where is the Master Sword in The Legend of Zelda: A Link Between Worlds?
You'll find it in the Lost Wood after acquiring all three pendants. Just walk up and yank it from the altar.
How do I upgrade the Master Sword?
Turns out, you can upgrade the Master Sword twice.
To obtain the Level 2 Master Sword, locate two pieces of Master Ore and take them to the Blacksmith of Hyrule. Now it will cause double damage.
As for the Level 3 Master Sword, bring the final two pieces of Master Ore to the Blacksmith of Lorule. Now you can deal twice the damage of the Level 2 blade.