HDD missing from sysinstall

[comperr]

When I put in my fbsd 6.3 or 7.0 install disk sysinstall is unable to
detect any of the hard drives in my computer.

This is includes SATA and IDE HDDs in varying orders.   BIOS is able
to detect the the hard drives.   I Previously had fbsd 6.2 installed
on them and the problem started when I upgraded the kernel to 6.3
although I don't see my upgrades relevance as I have tried to
reinstall from a clean disk since then.