Thanks to everybody! I will try to follow your instructions!
What I'm wondering right now:
Why does the Warp4 installation program give me no option to install OS/2 on the *primary* partition of the second hard drive? Is there a specific reason for that? That would overwrite my current OS/2 installation, but I wouldnt really mind that... just wondering...
IIRC it is a matter of where the machine supports booting (and I don't recall the PC750 supporting that method). But, you may be able to install bootmanager on the primary HDD and then select a partition on the secondary drive as installable. Also, I believe i had a problem with installing on a partition that was too big on the PC750... I think I kept my boot partition to something under a gig. Also, the primary partition should be at the beginning of freespace (with the only thing before it being BootManager if installed on the particular drive).
-Robert