#1 HDA install fails on large disks

[Arthur Brock]

"stpbx hdainstall" fails to partition the disk on large
partitions.

The partition definition it builds invalid. It appears
to try to partition to a negative block number. I
wonder if there's an incorrect numeric type which wraps
around to become a negative number when it exceeds its
correct size.

It failed on two separate computers with 160GB drives.