This is one that still tickles me,unanswered mystery of linux kernel,lol...
maybe kernel hackers and linux uber-geeks know the answer.
Tried centos 5 and arch linux 2007.8 while ago, both use sdX for my pata harddisks.
Currently using slackware 12 with stock kernel 2.6.22 , uses hdX instead.
So slackware 12 still uses that mysterious legacy option, right? whatever...
it's nice if someone could give correct answer,though
did some browsing,
but i'm still not sure which config option in .config.