I have to back up GlacierDC 100% on this.
Slayer's is very convenient for the beginner, so much so that it becomes a detriment because people will not bother to understand the concepts and procedures behind Slayer's Install Disc.
Perhaps some clarification might help things.
Slayer's is not a specific program name. It's the alias of a modder who put together a disc of convenient applications to use as a one-shot install of a modded Xbox hard drive.
The main component of Slayer's disc is a heavily configured EVOLUTION-X Dashboard which contains menu links to applications that are commonly used when modding.
Slayer's does not support ANYTHING. It is the BIOS that you load into your Mod Chip that supports all sorts of features like large hard drives, etc.
If you're going to take the lazy way out as a n00b and rely on Slayer's, do *yourself* a favor and read the tutorials that cover the procedures being performed by the Slayer's Disc.
This will result in 2 things:
1) You will understand exactly what's going on when your drive is being prepped.
2) You'll garner some respect on X-S because you probably won't be as likely to ask stupid, repetitive questions that have already been answered in FAQ, Pinned Topics and Tutorials.