Yes you can do that NO Problem' O....! You will not be able to run 9 and X at the same time though. (Unless it's classic under X) Just be sure to put X on the first drive and 9 on the second. I have 2 - 80 (eighty) gig drives with X on one drive and 9 on the other each formatted as a Single partition using the full 80 (eighty) gig. Just choose the start-up drive (X or 9) rebbot and your running............. R ----- Original Message ----- From: "Jonathan Park" <jpjuggler at comcast.net> To: "Mac OS X Newbies" <X-Newbies at lists.themacintoshguy.com> Sent: Sunday, January 11, 2004 8:46 AM Subject: [X Newbies] 9 and 10 on one machne, different HDs? > Is it possible to have two internal drives on a g4, one running nine and the > other running 10? Will this produce any conflicts? > I understand I have to upgrade my firmware to accomodate X. Will this > prevent me from running nine? > Thanks, > JP