Cant Boot Openbsd, new installation Options

[Wildherb]

Thought i'd give my problem its own thread:

After installing OZ I decided to go back to OpenBSD. The install process went OK with my sets on a CF card and using all the microdrive for BSD. However, when it came to rebooting the Z simply dropped into the OZ splash screen with a kernel panic. I tried restoring flash and re-installing but now i get the Sharp splash scree and an hdd error.

I decided to completely clean the HDD usung the D+M menu (which takes a while) and re-installed again. Still no joy when it comes to boot. I'm stuch. Help!

Here is a df done from the emergency D+B menu

CODE

disk dev hda 4096 MB 4095737856 bytes
16 heads, 63 sectors/track, 7936 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes

Device        Boot     Start          End         Blocks       Id     System
dev/hda4    *          1               7936        3999712+ a6    OpenBSD

cant understand why I've got hda4? doesnt make sense!

during the BSD setup my disk partition looks like this

CODE

             size           offset     fstype       [fsize   bsize     cpg]
a:    7999425           63        4.2BSD      2048    16384    1
c:    7999488             0        unused            0          0

EDIT
I should add that the installation will boot if I drop back to d+b linux shell and do insmod zbsdmod.o then ./zboot. Sorry, but I really dont understand what makes a machine actually boot but clearly something is wrong here.