On Wednesday,  7 November 2018 at 10:14:20 -0500, Clem Cole wrote:
> On Wed, Nov 7, 2018 at 9:09 AM <ron@ronnatalie.com> wrote:
>
>> The DEC drivers just left off the last 72 sectors.   There was no
>> provision using them for block replacement.
>
> Minor update -- *no dynamic replacement provision*.  There was a
> standard alone utility called BAD144 that implemented DEC Standard
> 144 (Bad Blocks).

Yes, this was also present in early FreeBSD distributions.  I have a
vague recollection that people warned against using it.

Greg
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