Hi!  I have done following to install NetBSD 1.0 for my drive.  It is 
1.6 Gig IDE drive.

1. I ran pfdisk to get the disk information.  Note the starting sector 
and length of the partition.  Following is the dump of pfdisk program 
displaying my hard disk.

# pfdisk version 1.2.1 by Gordon W. Ross  Aug. 1990
Modified by S. Lubkin  Oct. 1991
For help, enter: '?'
pfdisk> l
# Partition table on device: 0
geometry 1023 16 63 (cyls heads sectors)
#  ID  First(cyl)  Last(cyl)  Name  # start, length (sectors)
1   7     79        932       OS/2  # 79632, 860832
2   6      0         91       DOSbi # 63, 92673
3   0      0          0       empty # 0, 0
4 165    824       3150       unkno # 830592, 2345616
# note:  last(4): phys=(78,15,63) logical=(3150,15,63)
active: 2

2. I booted with NetBSD and when it asked about the disk cylinder, I 
entered CMOS setup minus 1.

3. For length and offset, I entered the value from the pfdisk program.  
Then, I continued to install the NetBSD.  

NOTE: YOU MUST HAVE PART OF BOOTABLE CODE FOR DOS AND NETBSD WITHIN 
512MB BOUNDARY.  Otherwise, you will not be able to use booteasy or 
osbs program to switch between DOS and NetBSD.

Hope this helps.

Kang