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To give you a better understanding of what I'm talking about I'll explain a couple things. Unlike burning DVDs where the protection is stripped out, burning protected PC games involves having to read the protection then write it back to the disc - both of which need to be done very accurately. Not all burners are able to write the protections accurately enough to make a working copy......

When you try to run a protected game it needs to perform a "handshake" of sorts between the disc and the game on your hard drive to verify that the disc is legitimate. If the protection is written back to the disc accurately enough it'll pass the handshake and you have what's known as a "working" copy ? one that doesn't need emulation to run. If the copy is less than perfect the handshake will fail because the copy protection will detect that there's something fishy with the copy. In that case you can use emulation tools which basically help the disc pass the handshake process.

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