Interesting, My CSC Hard Drive Bible VIII indicates
there are 3
 different 8438 drives.
 My book says
 8438/8438F,  32 Megs formatted,   4 heads,  615 Cyl,  26 sectors,
 68/40 MSecond timing    RLL 
If he has one of these, then ok.
  Then there is a third
 8438XT,  31 Megs formatted,   4 heads,  615 Cyl,  26 sectors,  68
 MSecond timing    XT-IDE 
XT-IDE? What's that? I didn't know that there was
an XT compatible IDE
controller, except a few rare and expensive ones.
  Doesn't the Model 30 have a built in disk
controller that you have to
 disable is use an ISA disk controller? I think there is IDE on the
 motherboard. You might need the actual PS2 setup disks for the model
 30. Is yours a 8086 or 80286 model 30? Most of the PS2 line had their
 own set up floppy disk. 
Good questions all. I don't see how he can proceed if
he hasn't got the
setup disk and figured out for sure if there's a controller on board and
that he's disabled it.
  Paxton