I'm interested in buying the thing w/ or w/o factory defaults (family wants mine, second one would be cool).
But I don't think you had to tell the BIOS to use the HD in the first place, thus you should be able to just replace the DOC (if you removed it), take out the HD, and it should boot from the DOC again (I think). Please correct me if I'm wrong in any aspect of this. It's been a little while since configured mine for a HD, but I didn't remember having to do much configuration.
~Chris
Chrisst141[at]attbi[dot]com