How do I install warp 4 to an 80 gig HDD?

[Bookworm]

I have OS/2 Warp 4 and an 80 gig drive. Here's how I want to partition it:

1.OS/2 boot manager. 3mb.
2.PC-DOS 2000, Win ME, Win 2k. 2gig, FAT-16 for DOS compatability.
3.Xenix.500Mb.
4.A.OS/2 Warp 4. 2gig, probably FAT-16.
B.Windows software & data, 75gig, FAT-32.
5.AIX. 500mb.

How do I get OS/2 to install to an 80 gig drive? Even the large drive upgrade only works up to 8 gig. The FAT-32 upgrade only works after you install OS/2. Is there another upgrade, or another way to install OS/2?

[Bookworm]

Oops, never mind, I dug a little more and found a previously overlooked replacement driver (Danis506.add, for IBM1s506.add) that supports drives up to 2Tb. I got as far as starting FDisk, deleted the existing partition, and restarted. Now all I get is an error message showing a bunch of numbers (I can post them if it will help) that look like CPU register contents, and telling me to contact my service representative. It doesn't even ask for the third disk. Nothing has changed since everything appeared to be working exept that the partition was deleted.

Am I doing something wrong? Or it the driver upgrade defective?