[Info-vax] Need help mounting shadow set

[R.A.Omond]

Tom Adams wrote:
> 
> [...snip...]
> 
> I kept my "bad" disk in the shadow set.  It is currently showing no
> errors.  I think the "bad" disk is only a problem when a bad block
> gets located in a trailing block of a file where the sun don't shine.
> When that happens, it logs an error when I put it in the shadowset or
> when I run ANAL/DISK/SHAD.  Or, so I have been told here.  I guess its
> a bug in the shadowing software that does not handle the trailing
> blocks consistently.

OK, since you've kept your "bad" disk, you might consider re-formatting
it (and, no, that's not a bug in the shadowing software).

Check out Hoff's recent addition to the World of Knowledge at:

http://labs.hoffmanlabs.com/node/1414

So, say your "bad" disk is DKB100:

1) Dismount it from your shadowset

2) $ mcr sys$etc:rztools_alpha
    RZTools> dkb100: /format

This will do a low-level format of your disk, and add any bad blocks
found to the bad block list, giving you a "fresh" disk.

How long it lasts before new bad blocks are found is another question
for another time ;-)