dual boot ? bootable factors

["Mark Luquette" <mark@embryodoc.org>]

Dave your suggestion for boot of OpenBSD using nt boot loader was :
# mount /dev/wdoa /mnt
# mkdir /win
# mount /dev/wd0i /win  #assuming wd01 is win2k partition
# cd /win
# dd if=/dev/wd0a of =openbsd.pbr bs=512 count=1

I altered in that wd1a is my openbsd root; I used wd1a instead of wd0a
The action failed returning - /dev/wd1a busy
I unmounted wd1a and the openbsd.pbr file was created

On boot and selection of "OpenBSD" from boot choices (boot.ini edited) I got
"disk error"

ISSUES:

Win 2k is installed on a primary drive mountable as wd0i
Win 2k is also installed on a secondary drive on a Fat32 partition (first
partition) and is selectable from the boot menu and works
OpenBSD is wd1a on the secondary drive (second partition), BUT I do not know
if that partition needs to be somehow conditioned to be bootable ?

OTHER OBSERVATION:
If I boot from the CD and when the boot> prompt appears, I tried putting in
wd1a or wd1a:/bsd,
neither worked
I may have a faulty install ?
The install did warn of unused sectors or cylinders ?
With a win2k fat32 partition on the same disk (and on the front end of the
disk) - did I still need the 63 offset on the open BSD partition ?
Will OpenBSD boot off a partition that is not the first partition on the disk
?