can't upgrade - Pentium 233MHz with AHA-1522 SCSI: "no disks found"

[Don Koch <aardvark@krl.com>]

After looking at the FAQ and running a search (OK, I found a similar
problem with a Dell 2450 and a RAID controller, but that's not that
similar to a 233MHz Pentium MMX with an old Adaptec 1522 controller),
I decided maybe it's time to bother the folks on misc.

When I try to upgrade from 3.0 to 3.5, I get the following message
after entering "yes" to "do you want to proceed" on an attempted upgrade:

No disks found.

I'm booting from floppy using the floppyB35.fs image which the
INSTALL file claims supports the Adaptec AHA-152x series.

I had the same problem trying to upgrade to 3.4. 

Any clues?

Thanks.

-- 
Don Koch
http://www.krl.com/