[rescue] booting Ultra 5/10 from drive connected to Promise IDE card?

[James Hartley]

The OpenBSD folks appear to be able to recognize newer Promise PCI IDE
cards such that newer larger IDE drives can be used in an Ultra 10:
 
http://www.sigmasoft.com/~openbsd/archive/openbsd-sparc/200410/msg00071.
html
 
.however, in the configuration cited above, the guy is still booting
from a SCSI drive which can be seen in the dmesg output. Is it possible
to boot from the larger drive connected to the IDE card?  I'm interested
in determining whether this will work with either the Ultra 5 or Ultra
10.  Thanks.
 
Jim