From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: tuhs-bounces@minnie.tuhs.org
X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on inbox.vuxu.org
X-Spam-Level: 
X-Spam-Status: No, score=-0.8 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,
	MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no
	version=3.4.2
Received: from minnie.tuhs.org (minnie.tuhs.org [45.79.103.53])
	by inbox.vuxu.org (OpenSMTPD) with ESMTP id b8a73cb7
	for <ml@inbox.vuxu.org>;
	Wed, 7 Nov 2018 14:08:54 +0000 (UTC)
Received: by minnie.tuhs.org (Postfix, from userid 112)
	id 32D43A22E1; Thu,  8 Nov 2018 00:08:53 +1000 (AEST)
Received: from minnie.tuhs.org (localhost [127.0.0.1])
	by minnie.tuhs.org (Postfix) with ESMTP id 54E4DA22A0;
	Thu,  8 Nov 2018 00:08:32 +1000 (AEST)
Received: by minnie.tuhs.org (Postfix, from userid 112)
 id 7037AA22A0; Wed,  7 Nov 2018 22:24:24 +1000 (AEST)
X-Greylist: delayed 361 seconds by postgrey-1.35 at minnie.tuhs.org;
 Wed, 07 Nov 2018 22:24:24 AEST
Received: from fbo-1.mxes.net (fbo-1.mxes.net [205.237.194.110])
 by minnie.tuhs.org (Postfix) with ESMTPS id 1DCDD94111
 for <tuhs@tuhs.org>; Wed,  7 Nov 2018 22:24:24 +1000 (AEST)
Received: from smtp-out-1.mxes.net (smtp-out-1.mxes.net [205.237.194.119])
 by fbi-1.mxes.lan (Postfix) with ESMTP id A3B042757E
 for <tuhs@tuhs.org>; Wed,  7 Nov 2018 07:18:23 -0500 (EST)
Received: from Customer-MUA (mua.mxes.net [10.0.0.1])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (No client certificate requested)
 by smtp.mxes.net (Postfix) with ESMTPSA id 08D8F27581
 for <tuhs@tuhs.org>; Wed,  7 Nov 2018 07:18:21 -0500 (EST)
From: <ron@ronnatalie.com>
To: "'The Eunuchs Hysterical Society'" <tuhs@tuhs.org>
References: <20181106170955.GA4087@indra.papnet.eu>
 <04db01d47606$7b003700$7100a500$@ronnatalie.com>
 <alpine.BSF.2.21.9999.1811070844190.78183@aneurin.horsfall.org>
In-Reply-To: <alpine.BSF.2.21.9999.1811070844190.78183@aneurin.horsfall.org>
Date: Wed, 7 Nov 2018 07:18:18 -0500
Message-ID: <218a01d47693$f83fd530$e8bf7f90$@ronnatalie.com>
MIME-Version: 1.0
Content-Type: text/plain;
	charset="us-ascii"
Content-Transfer-Encoding: 7bit
X-Mailer: Microsoft Outlook 16.0
Thread-Index: AQHvX8/ZGM/vAa0UZyEVmI7xr5vffQEdLwE0AaqSyHGk+CnfkA==
Content-Language: en-us
X-Sent-To: <dHVoc0B0dWhzLm9yZw==>
X-Sender: ronnatalie.com
Subject: Re: [TUHS] /crp
X-BeenThere: tuhs@minnie.tuhs.org
X-Mailman-Version: 2.1.20
Precedence: list
List-Id: The Unix Heritage Society mailing list <tuhs.minnie.tuhs.org>
List-Unsubscribe: <https://minnie.tuhs.org/cgi-bin/mailman/options/tuhs>,
 <mailto:tuhs-request@minnie.tuhs.org?subject=unsubscribe>
List-Archive: <http://minnie.tuhs.org/pipermail/tuhs/>
List-Post: <mailto:tuhs@minnie.tuhs.org>
List-Help: <mailto:tuhs-request@minnie.tuhs.org?subject=help>
List-Subscribe: <https://minnie.tuhs.org/cgi-bin/mailman/listinfo/tuhs>,
 <mailto:tuhs-request@minnie.tuhs.org?subject=subscribe>
Errors-To: tuhs-bounces@minnie.tuhs.org
Sender: "TUHS" <tuhs-bounces@minnie.tuhs.org>

:
> 
> > An early UNIX paper shows the system had four RK05's (4872 512-byte
> > blocks on UNIX, for some reason only 4800 used on the DEC OSs ...
> > remember we had to poke ROLLIN to copy the full UNIX partition
> > standalone).
> 
> Bad blocks?  I think I have an article in AUUGN where I proposed that bad
> blocks be assigned (somehow) to a pseudo-file as inode #0 (or -1?); that
way,
> the "dump" utility would not see it, and neither would the FS tools (but a
disk
> image would, of course).

No, not to my knowledge.   The DEC drivers just left off the last 72
sectors.   There was no provision using them for block replacement.
The utilities just stopped at 4800.