Best way to emulate Safedisk 3? Doom 3 question.

[Machina]

I think the crack is not well made, and I heard reports that it decreases your performance due to some wierd check.

I have an unsuccessfuly burned copy of Doom 3, I used Alcohol 120%, latest version, chose Safedisk 2/3 profile, and copied.

Well, what happens now is that when I start the game with the burned CD, it keeps reading from my CD-RW, the light keeps blinking, but the game won't start for whatever reason.

Once in like 10 tries, it would start.

Whats the best way to emulate Doom 3's protection?

I am using Alcohol 120%, enabled all possible emulations, but it does not help at all.

Thanks!