on my SCSI-Harddisk (previously run DOS on it) produces at every boot up
the error message:
old-*BSD disklabel -- see installboot(8) 
or similar. 

When submitting 
disklabel -c
I really see two entries named 4.2BSD in the partition table.

Can anyone explain to me what I have to alter to get NetBSD boot without
error message ?

Kind Regards,

Lukas
--
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