For the several people who have tried hard disk installs and gotten
errors (myself included), its due to a bug. Red Hat 5.2's hard disk
install failure:
http://www.redhat.com/support/docs/rhl/rh52-errata-general.html#BootImg
Apparently a lot of the mirrors are well out of date. I downloaded an
Oct archive, and looking at the numerous security flaws on that page
I guess I should try to find a more current mirror and download all
300 meg again? Yikes.