> On May 27, 2026, at 8:15 AM, Anders Magnusson <[email protected]> wrote:

> bad144 is not used by NetBSD/vax.  

Well, that’s . . . awkward :-)

> - MSCP drives have their own bad block replacement scheme.

Yah, that’s what I thought.  Thanks for confirming.

> - On RP drives there is a need for BAD144 in the disk driver, but I have 
> never written that support - no RP drives I have used have had any bad blocks 
> so I haven't cared :-)

Hah.  Well, I don’t want to rip it out of the system entirely, but I do want to 
isolate it to only the places where it’s useful.  If the number of those places 
is currently smaller by a handful, that is not my concern :-)

> I'm quite unsure if there will ever be a need for BAD144 on any VAX drives.  
> People using NetBSD/vax on RP07 with bad blocks are probably very close to 
> NIL :-)

I suspect the number of people using Xylogics SMD controllers on NetBSD/sun3 or 
NetBSD/sparc is also approximately NIL.  But I don’t want to throw anyone under 
the bus.

-- thorpej

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