>  > I follow these steps under OpenBSD to create and mount a 500MB disk
>  > image:
>  >
>>  sudo dd if=/dev/zero of=/home/sysjail00.img bs=1024 count=500000
>>  sudo vnconfig -c /dev/vnd0c /home/sysjail00.img
>>  sudo newfs /dev/vnd0c
>>  sudo fsck -y /dev/vnd0c
>>  sudo mkdir /mnt/sysjail00/
>>  sudo mount_ffs /dev/vnd0c /mnt/sysjail00/
>>
>>  Under NetBSD I get as far as:
>>
>>  sudo dd if=/dev/zero of=/home/sysjail00.img bs=1024 count=500000
>>  sudo vnconfig vnd0 /home/sysjail00.img
>>  ... and
>>  sudo newfs vnd0 fails. I have tried vnd0c and I see evidence on the
>>  net (in reference to memory, CD and CF images) that disklabel and
>>  perhaps fdisk may be required. I tried several disklabel variations
>>  but perhaps a manual disklabel edit is required? If so, what entries
>  > are required?
>
>On the i386 (and amd64) ports of NetBSD, the "entire disk" raw partition
>is "d", so if you use vnd0d above, it should all work.

Somewhat unexpectedly, vnd0a works and I had not tried it during my 
first attempts. Might I encounter any issues by specifying vnd0a?

Appreciated,

Michael.