FYI, I've made the following changes to the SCSI and HP-IB disk drivers:

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Bring some sanity into my frazzled existence:
- Always ensure that RAW_PART ("c") can be opened.
- Disallow unused or non-existent partitions from being opened.
- Don't do bounds checking or partition translation on RAW_PART.
This is consistent with other disk drivers in the NetBSD source tree,
and fixes a condition where the user could not fix a corrupted disklabel
due to a bogus offset for partition "c".

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A bit a go, I made similar changes to the standalone versions of
these drivers.  Together, they should ensure that the disklabel
can always be repaired from either SYS_INST or from NetBSD.  Between
this and the SLOWSCSI change made to the standalone SCSI code, I
think this addresses all of the problems reported to me regarding
initial installation and disklabels.

I've finally had time to update my sources at home, and have started
the snapshot building process.  Stay tuned.

        -- Jason R. Thorpe <thorpej@og.org>