The only Gateway ones that had any hidden partitions were within the last 2 years, when Goback was used, and then a hidden partition where MS info is stored (or that was the plan, I left about 19 months ago).
Either one can be permanently removed and space recovered by running fdisk!
brianf - all the bios for Gateway systems are tweaked within Gateway, so standard bios would not work with them. That's not going to be an issue for joetech, though, as he is just working with HDD and LS-120.
joetech - I've used other HDDs and CD-roms inside Gateways, as well as pulling the same from Gateway's and using them in homemade PCs. No bother at all!