> I have a M76 with  a ST1480N that I am trying to install 1.5 on.
> I boot from a RRD40 (slow) but no problem. I make it to the install
> but it says that there are no "useable" hard disks. I thought it might
> be a drive compatibility issue so I replaced the ST1480N with a RZ57
> and got the same result... Then I found out about "test 75". Thinking
> that this would solve my problem I ran it on the RZ57....
> It ran for hours and reported success!
> I rebooted and tried the install again with the same result!

Are they spinning up?  If not, set the spin up jumper on the seagate.
The RZ57 has a block up near the front bottom left (inverted) of the
drive that rolls forward.  Make sure pins 1 and 2 of that have a jumper.
If they aren't being seen, they have not spun up.

That is all I can think of.

Bob