Inaki Saez wrote:
| 
| I have 2 disks installed in my HP9000/425, both with a bootblock.
| The problem is that NetBSD is installed only in one of the disks
| and it is recognized at boottime as 2Z, which forces me to select
| it manually.
| I don't find any manual page or installation doc which explains
| how to make a disk unbootable.
| Any help?
| 
| Thanks in advance:

Are they SCSI?

SCSI disks are searched starting with highest SCSI ID and working down.
So, you can interchange the IDs on the disks.

If you don't want to keep the bootblock on the other disk, then you can
use dd to wipe it out.