Just read a thread where people were using the apple 3 mod, and some were saying that they had used slayers and now they could not play originals, and wanted to know how to lock hard drive, well in your apps that you installed using slayers, look for config magic, then lock hard drive with it.
Are you sure Config Magic comes with Slayer's? I looked for it a while ago and it wasn't on my HDD, so I just got it from the "usual places." Just wondering, it's possible I forgot to install it when I had the chance (although all the other Apps were there).
I should have said using 2.5, mine came with this in, if not then update to the newest evo dashboard and you can do it from there.
littlejonnys installer has a hard drive lock/unlock and team xavier auto installer has config magic on it
