Wow, I'm having a similar problem. I have not been able to create a boot disk - it refuses to load, "boot failed." So far I've tried: (On Windows) the mkfloppy.bat script on Knoppic CD; rawrite, rawrite2, and rawritewin; and (on RedHat) using dd to move boot image to /dev/fd0. It just seems like everything returns an error, all pointing to bad media, but I've gone through a stack of floppies, and in the meantime I had no trouble creating RedHat boot floppies.

Anyway, that's my experience for what it's worth.